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Viktor Ambartsumian

January 30, 2023

Viktor Amazaspovich Ambartsumian[c] (Russian: Виктор Амазаспович Амбарцумян; Armenian: Վիկտոր Համազասպի Համբարձումյան, Viktor Hamazaspi Hambardzumyan; 18 September [O.S. 5 September] 1908 – 12 August 1996) was a Soviet Armenian[8] astrophysicist and science administrator. One of the 20th century's top astronomers, he is widely regarded as the founder of theoretical astrophysics in the Soviet Union.

Viktor Ambartsumian
Born18 September [O.S. 5 September] 1908
Tiflis, Russian Empire (present-day Tbilisi, Georgia)
Died12 August 1996(1996-08-12) (aged 87)
Byurakan, Armenia
Resting placeByurakan
CitizenshipRussian Empire, Soviet Union, Armenia
Alma materLeningrad State University
Known forStellar association
SpouseVera (née Klochikhina) (1930–1995)
Children4, including Rouben
AwardsGold Medal of the Royal Astronomical Society (1960)
Bruce Medal (1960)
ForMemRS (1969)
Lomonosov Gold Medal (1971)
National Hero of Armenia (1994)
State Prize of Russia (1995)
Scientific career
FieldsAstrophysics
InstitutionsLeningrad State University
Pulkovo Observatory
Yerevan State University
Byurakan Observatory
ThesisNone[a]
Doctoral advisorAristarkh Belopolsky
Doctoral studentsViktor Sobolev, Benjamin Markarian, Grigor Gurzadyan
InfluencedSubrahmanyan Chandrasekhar,[b] Halton Arp,[4][5] Geoffrey Burbidge,[6] Adriaan Blaauw[7]
Signature

Educated at Leningrad State University (LSU) and the Pulkovo Observatory, Ambartsumian taught at LSU and founded the Soviet Union's first department of astrophysics there in 1934. He subsequently moved to Soviet Armenia, where he founded the Byurakan Observatory in 1946. It became his institutional base for the decades to come and a major center of astronomical research. He also co-founded the Armenian Academy of Sciences and led it for almost half a century—the entire post-war period. One commentator noted that "science in Armenia was synonymous with the name Ambartsumian." In 1965 Ambartsumian founded the journal Astrofizika and served as its editor for over 20 years.

Ambartsumian began retiring from the various positions he held only from the age of 80. He died at his house in Byurakan and was buried on the grounds of the observatory. He was declared a National Hero of Armenia in 1994.

Background

Ambartsumian was born in Tiflis on 18 September (5 September in Old Style), 1908[9] to Hripsime Khakhanian (1885–1972)[10] and Hamazasp Hambardzumyan (1880–1966).[11][12] Hripsime's father was an Armenian Apostolic priest from Tskhinvali,[13] while Hamazasp hailed from Vardenis (Basargechar).[14] His ancestors moved from Diyadin, what is now Turkey, to the southern shores of Lake Sevan in 1830, in the aftermath of the Russo-Turkish War.[15][12] Hamazasp (Russified: Amazasp) was an educated man of letters who studied law at Saint Petersburg University.[14][9] He was also a writer and translator and notably translated Homer's Iliad into Armenian from Classical Greek.[9][12] In 1912 he co-founded the Caucasian Society of Armenian Writers, which lasted until 1921.[16] Ambartsumian was the secretary, while Hovhannes Tumanyan, the famed poet, served as its president.[12]

Ambartsumian's parents married in 1904.[17] He had a brother, Levon, and sister, Gohar.[18] His brother, a geophysics student, died at 23-24 while on an expedition in the Urals.[19][9] Gohar (1907–1979) was a mathematician and Chair of Probability Theory and Mathematical Statistics at Yerevan State University towards the end of her life.[20]

Education

Ambartsumian developed an early interest in mathematics and was able to multiply by the age of 4. His interest in astronomy began with reading a Russian translation of a book by Ormsby M. Mitchel at 11. According to himself, he became an astronomer at the age of 12.[9] Between 1917 and 1924 he studied at Tiflis gymnasiums #3 and #4 where schooling was done in both Russian and Armenian. In 1921 he transferred to gymnasium #4 to study under Nikolay Ignatievich Sudakov, a Moscow-educated astronomer, whom Ambartsumian called a "very serious teacher of astronomy." Ambartsumian worked with Sudakov at the school observatory the latter had built.[9] At school, Ambartsumian wrote several papers on astronomy[21] and delivered lectures on the origin of the Solar System and extraterrestrial life at "first in school and then in the various clubs and houses of culture" beginning at 12–13.[9] In 1924 Ambartsumian delivered a lecture at Yerevan State University about the theory of relativity. He also met Ashot Hovhannisyan and Alexander Miasnikian, Armenia's communist leaders.[22]

In 1924 Ambartsumian moved to Leningrad, where he began attending the Herzen Pedagogical Institute. According to Shakhbazyan it was his non-peasant and non-proletarian background that kept him from attending Leningrad State University (LSU).[11] However, in an interview Ambartsumian stated that it was too late for him to apply to LSU, because he arrived in August and admissions were already closed. Not to lose a year, he instead enrolled in the physics and mathematics department at the pedagogical institute.[9] After a year, he transferred to LSU's department of physics and mathematics.[19][11][23] At university, Ambartsumian was interested in both astronomy and mathematics. "I loved mathematics, but at the same time I felt that my profession would be astronomy. Mathematics was like a hobby, but I did complete the full mathematics curriculum. Thus you could say that I graduated with a major in mathematics, but in fact it is recorded that I graduated as an astronomer," he said in an interview in 1987.[9] At LSU among his professors were the physicist Orest Khvolson and mathematician Vladimir Smirnov. He studied alongside other major Soviet scientists such as Lev Landau, Sergei Sobolev, Sergey Khristianovich and George Gamow.[19] In 1926 he published the first of his 16 scholarly papers as a student.[23][19] He graduated in 1928, although he received his diploma only fifty years later—in 1978.[9] His undergraduate thesis was "devoted to a study of radiative transfer radiative equilibrium."[9] He completed his postgraduate[24][25] studies at the Pulkovo Observatory under Aristarkh Belopolsky between 1928 and 1931.[23][11][26]

Career

Leningrad

After completing his postgraduate studies in 1931, Ambartsumian began working at the Pulkovo Observatory and teaching part-time at LSU.[9][1] In 1931 Ambartsumian began reading the first course on theoretical astrophysics in the Soviet Union.[19] He also served as Pulkovo's scientific secretary in 1931–32, which involved mostly administrative work.[9][2] Ambartsumian later characterized Pulkovo as being a "very old institution, and for this reason there were certain elements of ossification and stagnation. Nevertheless, this was the best qualified astronomical institution in the Soviet Union."[9]

In 1934 Ambartsumian was fired by Pulkovo director Boris Gerasimovich for alleged "laziness." Gerasimovich viewed Ambartsumian and other young astrophysicists as "undisciplined and in too much of a rush to publish untested theories and poorly documented research." Gerasimovich himself had a "tendency to non-cooperativeness."[27] Gerasimovich was not taken seriously by them. When in 1934 Subrahmanyan Chandrasekhar visited Leningrad, he was told by Ambartsumian, "Look here, here is a set of papers by Gerasimovich. I turn to an arbitrary paper and to an arbitrary line. I am sure you will find a mistake."[28] Chandrasekhar stated in 1977 that during his visit in 1934 Ambartsumian "was very free and very open. He was extremely critical of his seniors."[29]

After leaving Pulkovo, Ambartsumian founded the first department of astrophysics in the Soviet Union at Leningrad State University in 1934.[30][23][9][19] In 1934 he was named professor at LSU and in 1935 he was named doctor of physical-mathematical sciences without having to defend a thesis[1][31][32] "based on his scientific work through that date."[2] He headed the department until 1946[11] or 1947.[23][19]

Between 1939 and 1941 Ambartsumian was the director of the Astronomical Observatory of LSU. He was simultaneously prorector (deputy president) of the university.[23] Among his graduate students were Viktor Sobolev,[2] Benjamin Markarian,[9] Grigor Gurzadyan,[33] and others. Ambartsumian considered Sobolev his "most brilliant graduate student."[9]

Stalin's purges

Many of Ambartsumian's colleagues and friends suffered during the Great Purge under Stalin, most notably Nikolai Aleksandrovich Kozyrev (1908–83), with whom he became close friends in the mid-1920s.[9] Kozyrev was sentenced to ten years in a forced-labor camp, but survived the repressions. Others such as Matvei Petrovich Bronstein and Pulkovo director Boris Gerasimovich did not survive. Ambartsumian's relations with Kozyrev were "strained for the remainder of his life." McCutcheon notes that while in the West some have questioned Ambartsumian's possible role in the terror, "there is no hard evidence to suggest that he was guilty of anything more serious than surviving at a time when others did not."[2]

World War II

Ambartsumian led the evacuation of part of the faculty of Leningrad State University to Elabuga (Yelabuga), Tatarstan in 1941, after the Nazi invasion of the Soviet Union. There a branch of LSU operated under Ambartsumian's leadership until 1944.[23][2][19] He served as the dean of the branch.[26]

Armenia

In 1943[34][26] Ambartsumian moved with his family to Yerevan, Soviet Armenia, where he lived until the end of his life.[34] In the same year, he co-founded the Armenian Academy of Sciences along with scientists and scholars Hovsep Orbeli, Hrachia Acharian, Artem Alikhanian, Abram Alikhanov, Manuk Abeghian and others.[35] He served as vice president of the academy until 1947 and as president from 1947 to 1993.[19]

Since 1943 Ambartsumian served as director of the Yerevan Astronomical Observatory.[36] The small observatory was affiliated with Yerevan State University. Ambartsumian had secured a nine-inch telescope from Leningrad for the observatory. Ambartsumian said that before the war "this observatory did not rise significantly above the level of amateur variable star observations. During the war they also carried out photographic observations of variable stars using a small camera."[9] In 1945–1946 Ambartsumian founded the department of astrophysicists at Yerevan State University (YSU).[37][32] He was named professor of astrophysics at YSU in 1947.[24] He served as chair of the department until 1994.[37][d]

In 1965 Ambartsumian founded the journal Astrofizika (Armenian: Աստղաֆիզիկա, Russian: Астрофизика), which has been published by the Armenian Academy of Sciences since then. It was originally published in Russian, subsequently articles in English began to appear. He served as its editor-in-chief until 1987.[2] The journal has also been published since the first issue in English by Springer in the US as Astrophysics.[38][39]

Byurakan

 
The Byurakan Observatory in 2008
 
Վիկտոր Համբարձումյանի թանգարանը Բյուրականում

In 1946 Ambartsumian founded the Byurakan Astrophysical Observatory in the village of Byurakan, at an altitude of 1,405 m (4,610 ft), on the slopes of Mount Aragats, some 35 km (22 mi) from Yerevan.[2][36][40][41] The first buildings were completed in 1951,[41] though the official inauguration took place in 1956.[42] Observations began to be carried out simultaneous with the construction of the observatory. "Our instruments stood under the open sky, covered with tarpaulin," said Ambartsumian.[9] Ambartsumian initially lived at a house in the village of Byurakan then build a house within the observatory grounds with the money awarded with the 1950 Stalin Prize.[34] Ambartsumian directed the Byurakan Observatory until 1988 and was named its honorary director that year.[2][43] From 1946 until his death in 1996, the Byurakan Observatory served as Ambartsumian's "institutional base."[40]

In 1960 Ambartsumian secured a Schmidt telescope with 40І (102 cm) correcting plate and 52І (132 cm) mirror for Byurakan.[41] The telescope was reportedly made by Carl Zeiss AG in Nazi Germany in the 1930s and was transferred to Leningrad as spoils of war. It was completed in Leningrad and sent to Armenia.[44] Beginning with 1965, on Ambartsumian's initiative,[45] Benjamin Markarian started the First Byurakan Survey that resulted in the discovery of the Markarian galaxies.[41] A number of international symposiums and meetings were held at Byurakan under Ambartsumian's supervision.[41] In 1968 the observatory was awarded the Order of Lenin, the Soviet Union's highest civilian order for its great merit to the development of science.[41] In 1961 Ambartsumian supervised the establishment of an astrophysical station of Leningrad State University, his alma mater, within the grounds of the Byurakan Observatory.[19] It is where graduate students of the LSU did their summer internships until the late 1980s. It was shut down in 1993.[46]

Ambartsumian and his disciples at the Byurakan Observatory became known in the scholarly literature as the "Byurakan School."[40][47][48][49] From 1977 to 1996 Ambartsumian headed a specialized council for theses defenses at Byurakan. Over 50 scientists defended their PhD (Candidate) and Doctoral theses on astronomy, astrophysics and theoretical physics in those years under Ambartsumian.[41] Though most of the students were graduates of the astrophysics department of Yerevan State University,[42] many came from Russia, Georgia, Ukraine, Azerbaijan, Hungary, Bulgaria, and elsewhere.[50] Several symposiums of the International Astronomical Union and numerous conferences were held in Byurakan in attendance of Jan Oort, Fritz Zwicky, Subrahmanyan Chandrasekhar, Pyotr Kapitsa, Vitaly Ginzburg, and others. It was also visited by Soviet leaders Nikita Khrushchev and Leonid Brezhnev.[50]

With the Byurakan Observatory, Ambartsumian "put Armenia on the astronomical map"[51] and made Soviet Armenia "one of the world's centers for the study of astrophysics."[52] By the time of his death in 1996, The New York Times described Byurakan as "one of the world's leading astronomical research centers."[53] As of 1960 the Byurakan Observatory maintained regular contact with 350 research institutions and with scientists from 50 countries.[54]

Research

Ambartsumian carried out basic research in astronomy and cosmogony.[26][9] His research covered astrophysics, theoretical physics and mathematical physics.[55] Most of his research focused on physics of nebulae, star systems, and extragalactic astronomy.[9] He is best known for having discovered stellar associations and predicted activity of galactic nuclei.[30] In his later career, Ambartsumian held views in contradiction to the consequences of the general relativity, such as rejecting the existence of black holes.[25]

Stellar associations

In 1947 Ambartsumian discovered stellar associations, a new type of stellar system, which led to the conclusion that star formation continues to take place in the Milky Way galaxy.[56][9][57][53][58][59] At the time the "idea of star formation as an ongoing process was regarded as very speculative."[60] His discovery was announced in a short publication[61] by the Armenian Academy Sciences.[50] Ambartsumian's discovery was based on his observation of stars of O and B spectral types and T Tauri and flare stars that cluster very loosely.[50] This is significantly different from open clusters, which have a higher density of stars, while stellar associations have lower than average density.[50] Ambartsumian divided stellar associations into OB and T groups[60] and concluded that the "associations have to be dynamically unstable configurations, and must expand subsequently, dissolving to form field stars."[50] He thus argued that star forming is ongoing in the galaxy and that stars are born explosively[62] and in groups.[26][50]

Ambartsumian's concept was not immediately accepted. Chandrasekhar noted the "early scepticism with which this discovery was received by the astronomers of the 'establishment' when I first gave an account of [Ambartsumian's] paper at the colloquium at the Yerkes Observatory in late 1950."[63] Chandrasekhar noted that Ambartsumian's discovery of stellar associations had "far-reaching implications for subsequent theories relating to star formation."[3] McCutcheon noted that the discovery "opened an entirely new field of astrophysical research."[2]

Active galactic nuclei (AGN)

Ambartsumian began studying nuclei of galaxies in the mid-1950s.[64] He found that clusters of galaxies are unstable and that galaxy formation is still ongoing.[2] At the 1958 Solvay Conference on Physics in Brussels he gave a famous lecture in which he claimed "enormous explosions take place in galactic nuclei and as a result a huge amount of mass is expelled. In addition, if this is so, these galactic nuclei must contain bodies of huge mass and unknown nature."[60] Ambartsumian's report essentially introduced active galactic nucleus (AGN) as a major theory of galactic evolution.[2] The concept of AGN was widely accepted some years later.[60]

Astronomy from space

Ambartsumian was a "pioneer of astronomical research from Soviet spacecraft."[62] The program was directed by his disciple Grigor Gurzadyan and was launched in 1961. In April 1971 the Salyut 1 space station carried Orion 1, the "first space telescope with an objective prism, into orbit." In December 1973 the manned Soyuz 13 mission operated the "Orion-2 ultraviolet Cassegrain telescope with a quartz objective prism built in the Byurakan Observatory. Spectra of thousands of stars to as faint as thirteenth magnitude were obtained, as was the first satellite ultraviolet spectrogram of a planetary nebula, revealing lines of aluminium and titanium-elements not previously observed in planetary nebulae."[65]

These activities, especially the space missions, when for example a special manned spaceship had to be devoted to an experiment from the smallest Soviet republic, needed powerful backing, both in Kremlin corridors and within the top-secret rocket industry establishment. This was achieved due to Ambartsumian's political skills, with the active support of Mstislav Keldish, the then President of the Academy of Sciences of the USSR.[39]

Mathematics

Ambartsumian also made contributions to mathematics, most notably with his 1929 paper in Zeitschrift für Physik.[66][1] In it, Ambartsumian first introduced the inverse Sturm-Liouville problem.[67][68][69] He proved that "among all vibrating strings only the homogeneous vibrating string has eigenvalues that are specific to it—that is, homogeneous vibrating strings have a spectrum of eigenvalues."[2] It was only in the mid-1940s when his paper received attention and became a "significant research topic in the ensuing decades."[2] He commented: "when an astronomer is publishing a mathematical paper in a physical journal, he cannot expect to attract too many readers."[1]

Science administration

"As well as being one of the giants of astronomical research in the 20th century, Viktor Ambartsumian was also a great leader and organizer of science in Armenia, in Russia, and on the international level."

—Geoffrey Burbidge[70]

Soviet Academy of Sciences

Ambartsumian was elected corresponding member of the USSR Academy of Sciences in 1939 and full member (academician) in 1953.[23][2] In 1955 he became a member of the academy's presidium, the governing body.[2][71] He also chaired the Academy's Joint Coordinating Scientific Council on astronomy, which was responsible for the priorities and all major decisions in all of astronomy.[39] He was also chairman of the academy's commissions on astronomy (1944–46) and cosmogony (1952–64).[2][71]

In these positions, Ambartsumian was "one of the most powerful scientists of his time."[62] McCutcheon noted that Ambartsumian's "towering authority as an astrophysicist combined with his position in the Soviet establishment made him arguably the most powerful Soviet astronomer of his day."[2] He was often the "official head of Soviet delegations at many conferences, not only on astronomy but also on natural philosophy."[39]

From 1944 to 1979 Ambartsumian was a member of the editorial board of Astronomicheskii zhurnal (also known as Astronomy Reports), the Soviet Union's main astronomy journal.[2][38] He was also on the editorial board of Doklady Akademii Nauk SSSR (Proceedings of the USSR Academy of Sciences).[39]

Armenian Academy of Sciences

Although the Armenian branch of the Soviet Academy of Sciences was established in 1935, it was not until 1943 that the National Academy of Sciences of the Armenian SSR was founded. Ambartsumian was one of its original co-founders along with other prominent scholars and scientists, including Hovsep Orbeli, who became its first president. Ambartsumian initially served as vice president[2][34] and in 1947 he became the academy's second president, serving for 46 years until 1993.[35][2] When he stepped down in 1993, he was declared honorary president of the academy.[30]

Rouben Paul Adalian wrote that Ambartsumian "exercised enormous influence in the advancement of science in Soviet Armenia, and was revered as his country's leading scientist."[52] McCutcheon went on to note that "From that point forward, science in Armenia was synonymous with the name Ambartsumian."[2] As president of the principal coordinating body for scientific research in Soviet Armenia, Ambartsumian played a significant role in promoting the sciences in the country.[34] He actively promoted the natural and exact sciences, including physics and mathematics, radioelectronics, chemistry, mechanics and engineering.[32] Artashes Shahinian noted that Ambartsumian played a significant role in the development of the physical and mathematical sciences.[72] He played an instrumental role in the establishment and development of the Yerevan Scientific Research Institute of Mathematical Machines (YerNIIMM) in 1956,[71] popularly known as the "Mergelyan Institute" after its first director, mathematician Sergey Mergelyan.[73] Apoyan rejects that Ambartsumian had a direct involvement in its creation and characterizes his role as "favorable neutrality."[74] Overall, Apoyan criticizes Ambartsumian's role in science administration. He wrote that he had a tendency to "fail projects that did not directly serve his fame."[74] He went as far as call Ambartsumian's role similar to that of a "tyrant."[74]

Ambartsumian and Mergelyan had a complicated relationship. In 1971 Ambartsumian persuaded him to return to Armenia from Moscow and become vice president of the Armenian Academy of Sciences. However, in 1974 Mergelyan was not reelected to the presidium of the academy and was forced to leave it. Some academicians called for a revote, but Ambartsumian rejected any such attempts. Oganjanyan and Silantiev note that Ambartsumian was rumored to have seen Mergelyan as a rival for the academy's president and decided to "get rid of the competitor forever."[73]

Ambartsumian was the Chairman of the Editorial Board of the Armenian Soviet Encyclopedia (Haykakan Sovetakan Hanragitaran),[32][52] published in 12 volumes in 1974–86.[75] A supplementary volume devoted to Soviet Armenia was published in 1987.[76] Works on the encyclopedia began in 1967. Although it reflected the government's Marxist–Leninist viewpoint, is in the most comprehensive encyclopedia in the Armenian language to this day. Each volume was published in 100,000 copies.[77]

International

According to Jean-Claude Pecker Ambartsumian "had a very strong influence on world astropolitics" and is one of the few astronomers who have had such a "deep influence on the life of the international bodies devoted to the promotion and defense of astronomy and science in general."[78]

International Astronomical Union

Ambartsumian was a member of the International Astronomical Union (IAU) since 1946. He served as vice-president of the IAU from 1948 to 1955, then as president from 1961 to 1964.[79][2][43] As Vice President Ambartsumian attempted to have the IAU General Assembly be held in Leningrad in 1951, however, the IAU Executive Committee canceled the assembly, increasing tensions within the IAU. An IAU General Assembly eventually took place in Moscow in 1958.[79] Ambartsumian headed the organizing committee.[39] Blaauw noted that "During these years, Ambartsumian, although violently opposing the IAU's policy, remained loyal to the Executive Committee's majority decisions for the sake of safeguarding international collaboration, an attitude that contributed to his election as President of the IAU in 1961."[79] He continued to support it as "the world-wide organization embracing astronomers from all countries. His election as President of the IAU in 1961 reflected both the appreciation for his efforts in this respect and his outstanding scientific achievements."[24]

Ambartsumian was outspoken about the importance of international cooperation. At the 1952 IAU General Assembly in Rome he declared: "We believe that the joint study of such large problems as that of the evolution of celestial bodies will contribute to the cultural rapprochement of different nations, and to a better understanding among them. This is our modest contribution to the noble efforts toward maintaining peace throughout the world."[80] At the 1963 IAU symposium in Sydney he stated that while competition between nations is important, it should be associated with co-operation.[81]

International Council of Scientific Unions

Ambartsumian also served as president of the International Council of Scientific Unions (ICSU) between 1968 and 1972, being elected twice for two-year terms in 1968 and 1970.[82][43] He was the first individual from the Eastern bloc to be elected to that post.[83]

Philosophical and cosmological views

Ambartsumian published several books and articles on philosophy, including Philosophical Questions About the Science of the Universe (1973).[84] In a 1968 paper Ambartsumian wrote that he believes in a close collaboration of philosophy and the natural sciences to solve the main scientific problems about nature.[85] Ambartsumian became a member of the administration of the Philosophical Society of the Soviet Union when it was established in 1971. In 1990 he became honorary president of the Philosophical Society of Armenia, which was created through his efforts.[84]

Science and religion

Ambartsumian was an atheist[86] and believed that science and religion are irreconcilable.[80] Ambartsumian wrote in 1959:[87]

Since Copernicus challenged ecclesiastical authority in explaining nature, astronomy began to gradually gain one position after another, expelling God from all parts of the material world. The development of science today has brought a final triumph to atheism. The idea of the existence of God, the idea of world-creation has been defeated entirely.

For over four decades,[e] he headed Gitelik', the Armenian branch of the all-Soviet organization Znaniye (Knowledge), founded in 1947 to continue the pre-war atheist work of the League of Militant Godless.[89][90] It published atheist novels and journals, produced films and organized lectures on the supremacy of science over religion.[91] The organization engaged in what it called "scientific-atheistic propaganda."[92]

Despite his atheism, Ambartsumian reportedly felt that Christianity has been important in preserving Armenian identity.[93] According to one associate, Ambartsumian self-identified as an "Armenian Christian" but was not religious.[94] Ambartsumian had friendly relations with Vazgen I, the long-time head (Catholicos) of the Armenian Apostolic Church, especially since at least the late 1980s.[f] In 1969 Ambartsumian visited San Lazzaro degli Armeni in Venice, home of the Armenian Catholic congregation of the Mekhitarists[98] and was declared an honorary member of the San Lazzaro Armenian Academy that year.[99]

Marxism–Leninism and dialectical materialism

Ambartsumian accepted and followed Marxist-Leninist philosophy[80] and staunchly promoted dialectical materialism and projected it on his astrophysical interpretations.[2] Helge Kragh described Ambartsumian as a "convinced Marxist."[80] He wrote on Marxism–Leninism and dialectical materialism in 1959:[100][g]

The history of the development of human knowledge, each step forward in science and technology, each new scientific discovery, irrefutably attests to the truth and fruitfulness of dialectical materialism, affirms the correctness of the Marxist-Leninist teaching concerning the knowability of the world, the magnitude and transforming power of the human mind, which is penetrating ever deeper into the secrets of nature. At the same time the achievements of science convincingly demonstrate the complete unsoundness of idealism and agnosticism, and the reactionariness of the religious world view.

Dialectical materialism influenced Ambartsumian's cosmological views and ideas.[80] According to Loren Graham, "perhaps no great Soviet scientist has made more outspoken statements in favor of dialectical materialism" than Ambartsumian.[102] Mark H. Teeter wrote in a 1981 report that Ambartsumian is "one of a rather limited group of Soviet scholars of international stature who claim that dialectical materialism has assisted them in their work."[103] Kragh noted that Ambartsumian was not a cosmologist, but an astrophysicist, and that "his ideas of the universe were influenced both by his background in astrophysics and his adherence to Marxist–Leninist philosophy."[80] Graham notes that his "praise of dialectical materialism has been voiced again and again over the years; these affirmations have come when political controls were rather lax as well as when they were tight. We have every reason to believe that they reflect, at root, his own approach to nature."[102]

Political career and views

 
Ambartsumian

Ambartsumian is often referred to as a politician; Donald Lynden-Bell called him a skillful one.[51] In a 1977 interview Subrahmanyan Chandrasekhar went as far as to opine that Ambartsumian has been "much more of a politician than an astronomer" since the mid-1940s.[29]

Lyudvig Mirzoyan, a colleague and friend, wrote that "Ambartsumian was a true patriot of his native land, Soviet Armenia and all the Soviet Union, and simultaneously, he was a convinced internationalist."[104] He was described by a US-based Soviet government-printed magazine as an "ardent advocate of the widest possible international scientific exchange."[54]

Soviet politics

McCutcheon noted that Ambartsumian's life was "shaped and directed by the Soviet system" and he was politically loyal to the Soviet authorities.[2] Loren Graham noted that "At the same time, Ambartsumian was not afraid to reprimand the Communist Party ideologues when they obstructed his research."[105] Ronald E. Doel noted that Ambartsumian was in favor with the Communist Party and enjoyed the freedom to travel to the West.[106] Adriaan Blaauw wrote that "his political views harmonized to a considerable degree with those of Soviet rulers."[79] McCutcheon wrote the following on his relationship with the Soviet system:[2]

Ambartsumian was a patriot who believed his country was at the forefront of a great movement that would transform the world and improve the lot of mankind everywhere. Whereas his close friend and collaborator Nikolai Kozyrev would be rudely disabused of this notion in the late 1930s, all evidence indicates that Ambartsumian remained committed to the Soviet system to the end. His scientific genius combined with his political loyalty took him to the heights of the Soviet scientific establishment.

Ambartsumian jointed the Communist Party of the Soviet Union (CPSU) in 1940.[2] In 1948 he became a member of the Central Committee (the executive branch) of the Communist Party of the Armenian SSR.[2] Ambartsumian was also a member of the Supreme Soviet from 1950 to 1989 (3rd to 11th convocation sessions).[104][2] In 1989 he was elected as a representative from Armenia to the Congress of People's Deputies of the Soviet Union in the first relatively free elections.[107]

Ambartsumian was a delegate to the 19th (1952), 20th (1956), 22nd (1961), 23rd (1966), 24th (1971), 25th (1976) and 26th (1981) congresses of the CPSU.[104]

Cold War politics

Ambartsumian often signed open letters in support of the official line of the Soviet authorities. In 1971 he was among leading 14 Soviet scientists who signed a letter to U.S. President Richard Nixon in support of black militant communist Angela Davis and appealed him to "give her an opportunity of continuing her scientific work."[108] In 1983 Ambartsumian was among 244 Soviet scientists who signed a statement attacking U.S. President Ronald Reagan's Strategic Defense Initiative ("Star Wars"), namely Reagan's plan for an effective defense against nuclear attack. The scientists stated that Reagan is "creating a most dangerous illusion that may turn into an even more threatening spiral of the arms race."[109]

Ambartsumian's relationship with dissidents was complicated. In 1973 he refused to meet Yuri Orlov, nuclear physicist and a prominent dissident, after having offered him a job in Yerevan. Ambartsumian told him through subordinate that "there are situations when even an Academy member is helpless."[110] In 1975 he was among 72 Soviet scientists who denounced the award of the Nobel Peace Prize to Soviet physicist and dissident Andrei Sakharov.[111]

Armenian causes

Ambartsumian revered the Armenian language and supported its usage.[112][113][114] He insisted all internal communication of the Armenian Academy of Sciences be done in Armenian when he became president in 1947.[112] As president of the Armenian Academy of Sciences, Ambartsumian often gave speeches at major events, such as during the commemorations of the 1600th anniversary of Mesrop Mashtots, the inventor of the Armenian alphabet, in 1962[115] and the 100th anniversary of Hovhannes Tumanyan, Armenia's national poet, in 1969.[116]

Armenian genocide

Ambartsumian delivered a speech on 24 April 1965, on the 50th anniversary of the Armenian genocide, describing it as "extermination of the Armenian population of Western Armenia." He linked it to the 45th anniversary of Soviet Armenia and the revival of the Armenian people as a result of the October Revolution.[117][118] In an article published in Pravda on 24 April 1975 Ambartsumian linked the Armenian genocide to the Holocaust and blamed German imperialism during World War I for inspiring the Young Turks and the capitalist states for failing to defend the innocent Armenian population and praised the October Revolution for saving the Armenian nation.[119]

Nagorno-Karabakh

In November 1989 the Armenian Academy of Sciences, led by Ambartsumian, issued a statement protesting the decision of the Supreme Soviet of the Soviet Union to return Nagorno-Karabakh to the direct jurisdiction of Soviet Azerbaijan.[120]

In September 1990 Ambartsumian and four other Armenians, including writer Zori Balayan and actor Sos Sargsyan, went on a hunger strike at the Hotel Moskva in Moscow to protest the military rule over Nagorno-Karabakh declared by Mikhail Gorbachev.[121][122] Ambartsumian celebrated his 82nd birthday hunger striking.[123][124] He insisted that Gorbachev had violated the Soviet constitution by keeping Nagorno-Karabakh under direct rule from Moscow. "This is a bad thing when a government does not abide by its own laws," he argued. He also stated: "My desire is that Karabakh be part of Armenia. This is a problem that has to be solved with a long process and with concessions."[123] Ambartsumian stated that his only demand is that the "elected leaders of Nagorno-Karabakh regain control."[122] Ambartsumian called the hunger strike a "modest step" aimed at making a "huge resonance in the world—to let the world know."[124] The Soviet authorities "totally ignored" the strike.[125] He ended it after 9 days only when Catholicos Vazgen I persuaded him to do so.[126][112][125]

On 11 May 1991 Ambartsumian and a number of members of the Armenian Academy of Sciences wrote a letter to Soviet President Mikhail Gorbachev expressing their concern with the forced expulsion of ethnic Armenians from parts of NKAO and Shahumian rayon as part of Operation Ring.[127]

Soviet collapse and independence of Armenia

In June 1991 the session of the Armenian Academy of Sciences issued a statement on its views on Armenian independence and the future of the Soviet Union. The Academy stated its unconditional support for the independence of Armenia, pushed at the time by the Pan-Armenian National Movement (HHSh). However, it argued that because Armenia is economically interconnected with and dependent on other Soviet republics, an abrupt disruption in the existing relations would result in "unimaginable levels of economic collapse, unemployment and emigration." Thus, they called for Armenia to join the New Union Treaty proposed by Gorbachev. The session also argued that leaving the Soviet Union would mean to abandon Nagorno-Karabakh.[127]

As a communist, Ambartsumian reportedly regretted the collapse of the Soviet Union, but voted for Armenia's independence in the 1991 referendum. He appreciated independent Armenia, but reminded Armenians that they will be paying a high price for it.[128] In 1995 he congratulated Armenians worldwide with Armenia's independence and stated that the newly independent republic is "moving forward."[129] According to Yuri Shahbazyan, a friend and biographer of Ambartsumian, he remained sympathetic towards the Communist Party of Russia and was critical of Western-sponsored economic liberalization in Russia and other post-Soviet countries.[130]

Personal life

 
Ambartsumian's house-museum in Byurakan, where he lived since around 1950 and died in 1996.
 
A memorial in front of Ambartsumian's house in Yerevan

When Ambartsumian was referred to by foreigners as a Russian scientist, he corrected them by saying he was Armenian. He spoke perfect Armenian, albeit with an accent.[44]

Between 1946 and 1996 Ambartsumian mostly divided his time between Yerevan and Byurakan. He built himself a house within the Byurakan Observatory with the award money that came with his second Stalin Prize in 1950.[34] Since 1960 he also maintained a house next to the building of the Academy of Sciences in Yerevan, on Baghramyan Avenue.

Personality

Donald Lynden-Bell characterized Ambartsumian as a "broad-shouldered thickset man of medium height, quick intellect and strong character."[51] Lynden-Bell and Vahe Gurzadyan wrote that Ambartsumian was modest in private life and behaved simply in public.[125] Fadey Sargsyan described Ambartsumian as an "extremely modest" man.[131] Anthony Astrachan wrote in The New Yorker that Ambartsumian is "by all reports an engaging human being."[132] Ambartsumian admitted to not having any hobbies: "My only passion is science, astronomy. Like a jealous wife, it expects a man to give all of himself."[133] However, he loved poetry and music,[51] and "could enliven even the most abstract mathematical lectures with quotations from classical and contemporary poets."[58]

Family

In 1930 or 1931 Ambartsumian married Vera Fyodorovna (née Klochikhina), an ethnic Russian, who was the niece and the adopted daughter of Pelageya Shajn, the wife of Grigory Shajn, both Russian astronomers.[9][134][135][136] She was an English teacher who taught him to read his papers in English when he visited the U.S. and Britain. However, she could not reconcile with his "barbarous pronunciation," as she described it.[133] He was deeply depressed by her death in 1995.[125]

They had four children: daughters Karine (b. 1933) and Yelena (b. 1936) and sons Rafayel (b. 1940) and Rouben (b. 1941). All four became either mathematicians or physicists.[134][58] As of 1987 he had eight grandchildren.[9]

Retirement and death

Ambartsumian began retiring from the various positions he held in 1988, at 80. He left the position of the director of the Byurakan Observatory that year. In 1993 he stepped down as president of the Armenian Academy of Sciences and in 1994 as chair of astrophysics at Yerevan State University.[30][37]

Ambartsumian died at his house at the Byurakan Observatory complex on 12 August 1996, a month before his 88th birthday.[2][53][84] The house was opened as his museum in August 1998.[84] He was buried at the observatory grounds, next to his wife and parents.[137] His funeral was attended by thousands of people, including Armenia's president Levon Ter-Petrosyan.[125]

Recognition

 
Ambartsumian's statue in Yerevan

Ambartsumian was one of the leading astrophysicists[h] and astronomers of the 20th century.[139][140][i] In 1977 Subrahmanyan Chandrasekhar stated: "My own impression has always been that he was, when he was in his prime, one of the most perceptive and elegant of astronomers."[29] Chandrasekhar wrote in 1988:[3]

Academician Ambartsumian’s realm does not divide astronomy and astrophysics into its conventional parts: theoretical and observational. He is an astronomer par excellence. [...] There can be no more than two or three astronomers in this century who can look back on a life so worthily devoted to the progress of astronomy.

Ambartsumian was, arguably, the leading astronomer of the Soviet Union[141][142] and is universally recognized as the founder of the Soviet school of theoretical astrophysics.[143][57][j] He was also well-regarded internationally.[144][k] Loren Graham called him "one of the best-known abroad of all Soviet scientists."[102] He was an honorary or foreign member of academies of sciences of over 25 countries.[60]

Despite being a Soviet scientist, he was well-regarded in the United States.[145] During the Cold War, Ambartsumian was the first Soviet scientist to become foreign honorary member of the American Academy of Arts and Sciences and foreign associate of the National Academy of Sciences in 1958 and 1959, respectively.[146][l] In January 1971 Ambartsumian was invited to the U.S. House Committee on Science and Astronautics, where he was introduced by Fred Lawrence Whipple as a "man who is rated the world's greatest astronomer or at least among the very greatest."[149]

In Armenia

Ambartsumian is recognized as the greatest scientist in 20th century Armenia.[150] He is considered the greatest Armenian scientist[m][151] since Anania Shirakatsi, the seventh century astronomer.[152][153] Fadey Sargsyan, Ambartsumian's successor as President of the Armenian Academy of Sciences, stated in 1998 that Ambartsumian is "one of those scientists who, in his merits and reputation, goes beyond the limits of his scientific fields and in his own lifetime becomes a great national figure. He can truly be called a great Armenian."[84]

On 11 October 1994 Armenia's President Levon Ter-Petrosyan awarded Ambartsumian the title of a National Hero of Armenia[154] for his scientific work of international significance, science administration and patriotic activism.[155] His official obituary was signed by Armenia's president, government and parliament.[155]

 
 
Ambartsumian appeared on the 100-dram banknote (1998–2004)[156]

Tribute

An asteroid discovered at the Crimean Astrophysical Observatory in 1972 by Tamara Smirnova is named 1905 Ambartsumian.[157]

In 1998 Ambartsumian's 90th anniversary was celebrated in Armenia; the International Astronomical Union held a symposium at the Byurakan Observatory[84] and the Central Bank of Armenia issued a 100 dram banknote depicting Ambartsumian and the Byurakan Observatory.[156] The Byurakan Observatory was officially named after Ambartsumian that year.[41] Other things named after Ambartsumian include Chair of General Physics and Astrophysics at Yerevan State University,[37] a street, park, and public school in Yerevan,[158][159] and the Pedagogical Institute of Vardenis.[160]

In 2009 a 3.2-metre (10 ft) bronze statue of Ambartsumian was unveiled in Yerevan at the park around the Yerevan Observatory in attendance of President Serzh Sargsyan and other officials.[161] Busts of Ambartsumian stand at the Byurakan Observatory, the city of Vardenis (1978),[162] and at the central campus of Yerevan State University.[32]

Viktor Ambartsumian International Prize

In 2009 President of Armenia Serzh Sargsyan signed a decree to establish an international prize in Ambartsumian's memory.[163] It was first awarded in 2010 and is awarded every two years. The prize was initially $500,000, but was reduced to $300,000 in 2018.[164] It is considered one of the prestigious awards in astronomy and related fields.[165]

Awards and honors

Membership

Soviet Union
  • Corresponding Member of the USSR Academy of Sciences (1939)[23]
  • Full member (Academician) of the Armenian SSR Academy of Sciences (1943)[43]
  • Full member (Academician) of the USSR Academy of Sciences (1953)[23]
  • Honorary member of the Academies of Sciences of the Georgian SSR and Azerbaijan SSR[173]
Abroad

Ambartsumian was elected honorary and foreign member of 28 Academies of Sciences,[43] including:

Honorary degrees

Ambartsumian received honorary doctorates from several universities: Australian National University (1963),[179] University of Paris (1967), University of Liège (1967), Charles University in Prague (1967), Nicolaus Copernicus University in Toruń (1973), National University of La Plata (1974).[43][180]

Publications

Throughout his career, Ambartsumian authored some 20 books and booklets and over 200 academic papers.[43]

In 1939 he published the "first systematic textbook" in Russian on theoretical astrophysics, based on his lectures at Leningrad State University.[167][1]

Theoretical Astrophysics

Ambartsumian served as editor and senior author of the 1952 book Teoreticheskaia Astrofizika (Теоретическая астрофизика).[1] It was translated into a number of languages, including English, German and Chinese.[1] The English translation appeared in 1958 as Theoretical Astrophysics.[181][2] Roderick Oliver Redman noted in 1960 that it has found "many appreciative readers in both German and English speaking countries."[167] It became a bible for a generation of astronomers and astrophysicists.[60][2] The book received critical acclaim by contemporary astronomers. Cecilia Payne-Gaposchkin wrote that it is the "only advanced book of this scope in English, it will be of the greatest value."[182] George B. Field described the book as "comprehensively and competently constructed."[183] Redman wrote, "It is a welcome addition to the comparatively few general texts of solid worth which are now available."[184]

See also

References

Notes
  1. ^ Ambartsumian did not defend a doctoral thesis.[1] He was awarded a doctoral degree in 1935 based on his scientific work hitherto.[2]
  2. ^ "The formulation of the principles of invariance in the theory of radiative transfer: a theoretical innovation that is of the greatest significance. Many papers were contributed to a symposium on this topic at Byurakan in the fall of 1982; and in my contribution to that symposium I narrated the influence of Academician Ambartsumian’s ideas on my own related work."[3]
  3. ^ Ambartsumian is the most commonly accepted spelling of his last name in English. It comes from the Russified version is his Armenian last name, which, using the standard romanization, is transliterated as Hambardzumyan (-ian). Less common spellings of his last name include Ambarzumian (used until the 1930s) and Ambartsumyan (commonly used by Soviets in English publications).
  4. ^ The departments of astrophysics and general physics merged in 2009.[37]
  5. ^ The organization effectively ceased to operate during the dissolution of the Soviet Union in 1990, when the last of its publications were made.[88]
  6. ^ In 1988 Vazgen I publicly congratulated Ambartsumian's 80th anniversary in 1988.[95] Ambartsumian and the four other prominent Armenians hunger striking in Moscow sent a letter to Vazgen I on his birthday on 20 September 1990 expressing their admiration for him. "Your holy faith and your sublime example of selflessly serving the nation give us strength and endurance," read the statement.[96] Vazgen I was made honorary member of the Ambartsumian-led Armenian Academy of Sciences in 1991.[97]
  7. ^ Also cited in[80][101]
  8. ^ "...recognized as one of the giants of twentieth-century astrophysics..."[2]
    "Victor Ambartsumian, a giant of world astrophysics, alive..."[138]
  9. ^ Geoffrey Burbidge: "...one of the giants of astronomical research in the 20th century..."[70]
  10. ^ Russian Academy of Sciences: "основоположник советской школы теоретической астрофизики"[23]
    Andrei Severny and Viktor Sobolev: "V. A. Ambartsumyan is considered to be, by right, the founder of Soviet theoretical astrophysics."[26]
    Garik Israelian: "It is commonly accepted that V.A. Ambartsumian was a father of the Soviet school of Theoretical Astrophysics."[60]
    A. David Andrews: "This eminent founder of astrophysics in the former Soviet Union..."[58]
  11. ^ The authors of a 1981 US government report described him as "among the Soviet Union's best-known and most respected scientists abroad."[103]
  12. ^ "the first Soviet Scientist since World War II to become a foreign honorary member of the American Academy of Arts and Sciences."[147] "The National Academy of Sciences announced today that Viktor A. Ambartsumyan, a Soviet astronomer, had been made a foreign associate of the academy -- the first Soviet scientist to be so honored in over a decade."[148]
  13. ^ Areg Mikayelyan, director of Byurakan Observatory since 2017: "I can now say that he was the greatest scientist in Armenian history."[44]
Citations
  1. ^ a b c d e f g h Lynden-Bell & Gurzadyan 1998, p. 25.
  2. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag McCutcheon, Robert A. (1 November 2019). . Complete Dictionary of Scientific Biography. Encyclopedia.com. Archived from the original on 3 December 2019.
  3. ^ a b c Chandrasekhar, S. (1988). "To Victor Ambartsumian on his 80th birthday". Astrofizika. 29 (1): 7–8. Bibcode:1988Afz....29....7C.. Reprinted in
  4. ^ Cherry, David (30 January 1995). "A Galactic 'Smoking Gun'". The Washington Post. ...the theory of Armenian astrophysicist Viktor Ambartsumian in his "Problems of Modern Cosmogony" (available for 20 years in Russian, German and French). The theory was modified and elaborated by the American astronomer Halton Arp in his widely read "Quasars, Redshifts and Controversies" (1987).
  5. ^ Overbye, Dennis (6 January 2014). "Halton Arp, 86, Dies; Astronomer Challenged Big Bang Theory". The New York Times. Looking them up in the Palomar library, he realized that many of those radio sources were quasars that could have been shot out of a nearby galaxy, an idea first explored by the Armenian astronomer Victor Ambartsumian a decade earlier.
  6. ^ Longair, Malcolm; Rees, Martin (2017). "Obituary: Geoffrey Ronald Burbidge. 24 September 1925 – 26 January 2010". Biographical Memoirs of Fellows of the Royal Society. 63. doi:10.1098/rsbm.2017.0002. Geoff was sympathetic to this as it was related to the radical ideas of the influential Armenian astronomer Viktor A. Ambartsumian (ForMemRS 1969), who envisaged the centres of galaxies as places where new matter was created.
  7. ^ "Oral Histories: Adriaan Blaauw". aip.org. American Institute of Physics. 19 August 1979. So Ambartsumian's papers became known to us, and I studied those.
  8. ^ Sullivan, Walter (26 August 1964). "NEW ERA AHEAD, ASTRONOMER SAYS; Photos of the Moon Cited at World Science Parley". The New York Times. p. 13. The great Soviet Armenian astronomer, Viktor A. Ambartsumian...
  9. ^ a b c d e f g h i j k l m n o p q r s t u v w x y McCutcheon, Robert (2 October 1987). . Niels Bohr Library & Archives, American Institute of Physics. Archived from the original on 2 December 2019. Originally published in McCutcheon, R.A. (1990). "The early career of Viktor Amazaspovich Ambartsumian: An interview (Erevan, October 1987)". The Astronomy Quarterly. Elsevier. 7 (3): 143–176. Bibcode:1990AstQ....7..143M. doi:10.1016/0364-9229(90)90019-W.
  10. ^ Parsamian 2008, p. 89.
  11. ^ a b c d e Shakhbazyan 2011, p. 293.
  12. ^ a b c d Brutian 2008, p. 100.
  13. ^ Shakhbazyan 2011, pp. 76–78.
  14. ^ a b Shakhbazyan 2011, p. 41.
  15. ^ Shakhbazyan 2011, p. 46-50.
  16. ^ Hacikyan, Agop Jack; Basmajian, Gabriel; Franchuk, Edward S.; Ouzounian, Nourhan (2005). The Heritage of Armenian Literature: From the eighteenth century to modern times. Detroit: Wayne State University Press. p. 622. ISBN 9780814332214.
  17. ^ Shakhbazyan 2011, p. 78.
  18. ^ Shakhbazyan 2011, p. 85.
  19. ^ a b c d e f g h i j Sobolev, V. V. (16 October 2003). . Journal of St. Petersburg University (in Russian) (22–23). Archived from the original on 14 December 2019.; date: 10.11.1996
  20. ^ . ysu.am (in Armenian). Yerevan State University. Archived from the original on 3 December 2019.
  21. ^ Shakhbazyan 2011, pp. 96–97.
  22. ^ Brutian 2008, p. 101.
  23. ^ a b c d e f g h i j k l m . ras.ru. Russian Academy of Sciences. 16 September 2008. Archived from the original on 7 December 2019.
  24. ^ a b c Blaauw, Adriaan (1997). "V. A. Ambartsumian (18 September 1908 – 12 August 1996)". Journal of Astrophysics and Astronomy. 18 (1): 1–8. Bibcode:1997JApA...18....1B. doi:10.1007/BF02714847. S2CID 121212500.
  25. ^ a b Lynden-Bell & Gurzadyan 1998, p. 24.
  26. ^ a b c d e f Severnyi, A. B.; Sobolev, V. V. (1969). Translated by W. V. Chumakov. "Viktor Amazaspovich Ambartsumyan (on his 60th birthday)". Soviet Physics Uspekhi. 11 (5): 776–777. doi:10.1070/PU1969v011n05ABEH003750.
  27. ^ McCutcheon 1991, p. 102.
  28. ^ Wali, Kameshwar C. (1991). Chandra: A Biography of S. Chandrasekhar. University of Chicago Press. p. 117. ISBN 9780226870557.
  29. ^ a b c Weart, Spencer (17 May 1977). "Oral Histories: S. Chandrasekhar - Session I". American Institute of Physics.
  30. ^ a b c d Petrosian, Artashes R.; Harutyunian, Haik A.; Mickaelian, Areg M. (June 1997). "Victor Amazasp Ambartsumian". Physics Today. 50 (6): 106. doi:10.1063/1.881754. (PDF)
  31. ^ Parsamian 2008, p. 90.
  32. ^ a b c d e . ysu.am (in Armenian). Yerevan State University. Archived from the original on 7 December 2019.
  33. ^ . aras.am. Armenian Astronomical Society. Archived from the original on 20 December 2019.
  34. ^ a b c d e f Brutian 2008, p. 102.
  35. ^ a b . sci.am. National Academy of Sciences of the Republic of Armenia. Archived from the original on 7 December 2019.
  36. ^ a b Parsamian 2008, p. 91.
  37. ^ a b c d e . ysu.am (in Armenian). Yerevan State University. Archived from the original on 7 December 2019.
  38. ^ a b Parsamian 2008, p. 95.
  39. ^ a b c d e f Lynden-Bell & Gurzadyan 1998, p. 31.
  40. ^ a b c Graham 1987, pp. 422–324.
  41. ^ a b c d e f g h . bao.am. Byurakan Astrophysical Observatory. Archived from the original on 5 December 2019.
  42. ^ a b Lynden-Bell & Gurzadyan 1998, p. 27.
  43. ^ a b c d e f g h i . Armenian Astronomical Society. Archived from the original on 1 December 2019.
  44. ^ a b c Martirosyan, Marine; Sarukhanyan, Vahe (21 March 2018). . Hetq. Archived from the original on 1 December 2019.
  45. ^ Khachikian, E. Ye. (1979). "On the Activity of the Nuclei of Galaxies". In Westerlund, Bengt E. (ed.). Stars and Star Systems. Astrophysics and Space Science Library. Vol. 75. D. Reidel Publishing Company. p. 109. doi:10.1007/978-94-009-9440-9_10. ISBN 978-94-009-9442-3. The history of objects with UV-excess originated in the midsixties when, on Ambartsumian's initiative, Markarian began to make a successful survey of the sky with a view to detecting galaxies with anomalous spectra (Markarian 196'7), in Byurakan, using a 40-inch telescope of the Schmidt system provided with an objective prism of the same diameter.
  46. ^ Chronology at Astronomy at St. Peteresburg University (in Russian). : Начала создаваться Бюраканская станция. ;: В октябре-ноябре Т.А. Полякова последней из сотрудников Астрономического института проводит наблюдения на нашей Бюраканской станции. С тех пор станция законсервирована.
  47. ^ Vucinich 2001, p. 174.
  48. ^ King-Underwood, Ani (22 August 1985). "Filling the gaps in Einstein's theory". New Scientist (1470): 50.
  49. ^ "Symposium on the Philosophical Problems of Astronomy in the USSR Academy of Sciences". Soviet Physics Uspekhi. 16 (4): 579. 1974. doi:10.1070/PU1974v016n04ABEH005362. These ideas, which are being developed by the Byurakan school of Astronomers...
  50. ^ a b c d e f g Lynden-Bell & Gurzadyan 1998, p. 28.
  51. ^ a b c d Lynden-Bell, D. (26 August 1996). . The Independent. Archived from the original on 2 December 2019.
  52. ^ a b c Adalian, Rouben Paul (2010). "Hambartsumian, Viktor". Historical Dictionary of Armenia. Lanham, Maryland: Scarecrow Press. pp. 353-354. ISBN 978-0-8108-7450-3.
  53. ^ a b c Saxon, Wolfgang (15 August 1996). "Viktor A. Ambartsumyan, 87, Expert on Formation of Stars". The New York Times. p. 22.
  54. ^ a b Pisarzhevsky, Oleg (January 1960). "Blue Galaxies". The USSR: 33-35.
  55. ^ Brutian 2008, p. 104.
  56. ^ Lankford, John, ed. (2011) [1997]. "Ambartsumian, Viktor Amazaspovich (b. 1908)". History of Astronomy: An Encyclopedia. Routledge. p. 10. ISBN 9781136508349.
  57. ^ a b Masevich, Alla Genrikhovna (14 September 2019). . Encyclopedia Britannica. Archived from the original on 2 December 2019.
  58. ^ a b c d Andrews, A. D. (1997). "Victor Ambartsumian (1908-1996)". Irish Astronomical Journal. 24 (1): 4–6. Bibcode:1997IrAJ...24....3G.
  59. ^ Keldysh, M. (1965). "The progress and organization of science in the U. S. S. R". Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 286 (1407): 448. Bibcode:1965RSPSA.286..441K. doi:10.1098/rspa.1965.0156. S2CID 154749327. Ambartsumyan has done very interesting work on stellar associations, and it is his conclusion that the process of star-formation continues to this day.
  60. ^ a b c d e f g Israelian, Garik (1997). . Bulletin of the American Astronomical Society. 29 (4): 1466-1467. Archived from the original on 11 September 2015.
  61. ^ Ambartsumian, V. A. (1947). (PDF) (in Russian). Yerevan: Armenian SSR Academy of Sciences Press. Archived from the original (PDF) on 3 December 2019.
  62. ^ a b c Lynden-Bell & Gurzadyan 1998, p. 22.
  63. ^ Lynden-Bell & Gurzadyan 1998, pp. 28–29.
  64. ^ Lynden-Bell & Gurzadyan 1998, p. 29.
  65. ^ Lynden-Bell & Gurzadyan 1998, p. 30-31.
  66. ^ Ambarzumjan, V. (September 1929). "Über eine Frage der Eigenwerttheorie". Zeitschrift für Physik (in German). 53 (9–10): 690–695. Bibcode:1929ZPhy...53..690A. doi:10.1007/BF01330827. S2CID 121562123.
  67. ^ Eskitaşçioğlu, Esin İnan; Açil, Mehmet (2017). (PDF). Electronic Journal of Differential Equations (41): 1. ISSN 1072-6691. Archived from the original (PDF) on 10 May 2018.
  68. ^ Anger, Gottfried (1990). Inverse Problems in Differential Equations. Akademie-Verlag Berlin. p. 224. ISBN 9780306431647.
  69. ^ Ozkan, A.S.; Keskin, B. (2012). "Spectral problems for Sturm–Liouville operator with boundary and jump conditions linearly dependent on the eigenparameter". Inverse Problems in Science and Engineering. 20 (6): 799. doi:10.1080/17415977.2011.652957. S2CID 122220549.
  70. ^ a b Burbidge, Geoffrey (1998). "Introduction". In Ambartsumian, Rouben V. (ed.). A life in astrophysics. Selected papers of Viktor A. Ambartsumian. New York: Allerton Press. pp. vii-viii. ISBN 9780898640823.
  71. ^ a b c Parsamian 2008, p. 94.
  72. ^ Parsamian 2008, p. 440.
  73. ^ a b Oganjanyan, Sergey; Silantiev, Sergey (2017). "Sergey Mergelyan: Triumph and Tragedy". Fourth International Conference on Computer Technology in Russia and in the Former Soviet Union (SORUCOM). IEEE Computer Society: 8–12. doi:10.1109/sorucom.2017.00008. ISBN 978-1-5386-4741-7. S2CID 49643309.
  74. ^ a b c Apoyan, Grigor (14 August 2005). . Almanac Lebed (in Russian). No. 438. Archived from the original on 31 January 2020.
  75. ^ Adalian, Rouben Paul (2010). Historical Dictionary of Armenia. Lanham, Maryland: Scarecrow Press. p. 605. ISBN 978-0-8108-7450-3.
  76. ^ Bardakjian, Kevork B. (2000). A Reference Guide to Modern Armenian Literature, 1500-1920: With an Introductory History. Wayne State University Press. p. 615. ISBN 9780814327470.
  77. ^ Ayvazian, Hovhannes (2013). "Հանրագիտարանը եւ մենք՝ հայերս [Encyclopedia and the Armenians]". Etchmiadzin (in Armenian). 69 (3): 140–141.
  78. ^ Pecker, Jean-Claude (1988). "Victor Ambartsumian and the I.A.U." Astrophysics. 29 (1): 9–14. Bibcode:1988Ap.....29..409P. doi:10.1007/BF01005853. S2CID 119494558.
  79. ^ a b c d Blaauw, Adriaan (2007). "Ambartsumian, Victor Amazaspovitch". In Hockey, Thomas (ed.). Biographical Encyclopedia of Astronomers. Volume I: A—L. Springer. pp. 40-41. ISBN 9780387304007.
  80. ^ a b c d e f g Kragh, Helge (2012). "The Universe, the Cold War, and Dialectical Materialism". arXiv:1204.1625 [physics.hist-ph].
  81. ^ . The Sydney Morning Herald. 26 March 1963. Archived from the original on 3 December 2019.
  82. ^ . council.science. International Science Council. Archived from the original on 6 December 2019. 1968-1972 Victor A. Ambartsumian (USSR)
  83. ^ Lynden-Bell & Gurzadyan 1998, p. 33.
  84. ^ a b c d e f Kalloghlian, A. T. (October 1998). "On the 90th birthday of Academician V. A. Ambartsumian, founder of the journal Astrophysics, at Symposium No. 194 of the International Astronomical Union". Astrophysics. 41 (4): 325–327. Bibcode:1998Ap.....41..325K. doi:10.1007/BF02894657. S2CID 121474711.
  85. ^ Ambartsumian, V. A. (1968). (PDF). Uspekhi Fizicheskikh Nauk (in Russian). 96 (1): 19. Archived from the original (PDF) on 3 December 2019.
  86. ^ Ayrapetyan, Albert (10 March 2009). . Relga (in Russian). Moscow (184). Archived from the original on 24 August 2014. ...автор, атеист и коммунист утверждает...
  87. ^ Амбарцумян В. А. Наука о Вселенной и религия. [К критике фидеизме]. Наука и религия, 1959, No 1, стр. 9 – 12; cited in Nedelko, Vitaliy I.; Khundzhua, Andrey G. (2008). (PDF). Православное осмысление творения мiра и современная наука (in Russian). Moscow: Russian Orthodox Church (4): 229. ISBN 978-5-902884-06-4. Archived from the original (PDF) on 3 December 2019.
  88. ^ "ՀԽՍՀ "Գիտելիք" ընկերություն". haygirk.nla.am (in Armenian). National Library of Armenia. Retrieved 7 December 2019.
  89. ^ Corley, Felix (1996). "The Armenian Church Under the Soviet Regime, Part 1: the Leadership of Kevork" (PDF). Religion, State & Society. Keston Institute. 24 (1): 36.
  90. ^ "«Գիտելիք»". Armenian Soviet Encyclopedia. Volume III (in Armenian). 1977. p. 81. ՀՍՍՀ-ում «Գիտելիք» ընկերությունը ևս հիմնադրվել է 1947-ին ... Հիմնադրման օրից նախագահն է ակադեմիկոս Վ. Համբարձումյանը։
  91. ^ Laitila, Teuvo (2016). "Russia: Atheism, 'Blasphemy', State and Orthodox Christianity". In Tomlins, Steven; Tomlins, Steven (eds.). The Atheist Bus Campaign: Global Manifestations and Responses. Leiden: BRILL. p. 263. ISBN 9789004328532.
  92. ^ Danielian, Kh. (1959). "Հայկական ՍՍՌ քաղաքական և գիտական գիտելիքների տարածման ընկերությունը [The Armenian Society for Spreading Political and Scientific Knowledge]". Patma-Banasirakan Handes (in Armenian). N 2-3 (2–3): 391. Ընկերության աշխատանքներում զգայի տեղ է հատկացվում գիտա-աթեիստական պրոպագանդային։
  93. ^ Shakhbazyan 2011, p. 287.
  94. ^ Parsamian 2008, p. 344.
  95. ^ Parsamian 2008, p. 435.
  96. ^ Hambardzumyan, Viktor; Sargsyan, Sos; Balayan, Zori; Babayan, Simeon; Grigoryan, Vachagan (1990). "Տ. Տ. Վազգեն Ա Ամենայն Հայոց Կաթողիկոս". Etchmiadzin (in Armenian). 47 (8–9): 20.
  97. ^ . sci.am. Archived from the original on 15 December 2019.
  98. ^ Rosino, Leonida [in Italian] (1988). "Encounters with Victor Ambartsumian one afternoon at the San Lazzaro Degli Armeni island at Venice". Astrophysics. 29 (1): 412–414. Bibcode:1988Ap.....29..412R. doi:10.1007/BF01005854. S2CID 120007462.
  99. ^ Parsamian 2008, p. 377.
  100. ^ Graham 1987, pp. 391–392.
  101. ^ Hawkes, Nick (2012). Evidence of God: A Scientific Case for God. Wipf and Stock. p. 29. ISBN 9781620321447.
  102. ^ a b c Graham 1987, p. 391.
  103. ^ a b Teeter, Mark H. (1981). "Philosophy". In Teeter, Mark H.; Sutter, Eleanor B.; Ruble, Balir A. (eds.). Soviet Research Institutes Project. Volume III: The Humanities. United States International Communication Agency. p. 646.
  104. ^ a b c Parsamian 2008, p. 96.
  105. ^ Graham 1987, p. 392.
  106. ^ Doel, Ronald E. (1992). "Evaluating Soviet Lunar Science in Cold War America". Osiris. 7: 254. Bibcode:1992Osir....7..238D. doi:10.1086/368712. JSTOR 301774. S2CID 143320796.
  107. ^ . politika.su. Archived from the original on 25 December 2019.
  108. ^ Szulc, Tad (4 January 1971). "Russians Invited to the Davis Trial". The New York Times. p. 1.
  109. ^ "Soviet Scientists Call Missile Defense Plan By U.S. an Illusion". The New York Times. 10 April 1983. p. 14.
  110. ^ Goldberg, Paul (1988). The Final Act: The Dramatic, Revealing Story of the Moscow Helsinki Watch Group. New York: Morrow. pp. 30–31. ISBN 9780688068592.
  111. ^ "72 Soviet Academicians Assail Sakharov on Prize". The New York Times. 26 October 1975. p. 16.
  112. ^ a b c Brutian 2008, p. 105.
  113. ^ Vahanyan, Gvidon (1985). . Garoun (in Armenian). Writers Union of Armenia (2). Archived from the original on 12 December 2019.
  114. ^ Badalyan, Melanya (15 November 2019). Azg (in Armenian). Archived from the original on 12 December 2019. Վիկտոր Համբարձումյանը հայ եւ համաշխարհային գիտական մտքի պատմության մեջ թողեց մեծ ժառանգություն, բայց իր վերջին խոսքիՙ Կտակի մեջ ժողովրդի մեծագույն առաքինությունը մայրենի լեզվի տիրապետումն ու դրա պահպանումն է համարում:
  115. ^ Hambardzumyan, Viktor (1962). "Հայ գրի և դպրության մեծ հիմնադիրը [The Great Founder of Armenian Writing and Written Language]". Patma-Banasirakan Handes (in Armenian). № 3 (3): 3–16.
  116. ^ Hambardzumyan, Viktor (1969). "Համազգային մեծ բանաստեղծը [The Great National Poet]". Lraber Hasarakakan Gitutyunneri (in Armenian). № 9 (9): 3–4.
  117. ^ Hambardzumyan, Viktor (1965). "Մեծ եղեռնը [Mets Yeghern]". Patma-Banasirakan Handes (in Armenian). № 1 (1): 19–20.
  118. ^ Hambardzumyan, Viktor (1965). "Եղեռն և վերածնունդ [Mets Yeghern and Revival]". Patma-Banasirakan Handes (in Armenian). № 2 (2): 41–54.
  119. ^ Hambardzumyan, Viktor (1975). "Իմպերիալիզմը գենոցիդի հանցավորն է [Imperialism – the culprit of genocide]". Patma-Banasirakan Handes (in Armenian). № 2 (2): 67–72.
  120. ^ Hambardzumyan, Viktor A.; Sedrakian, D. M. (1989). "Հայկական ԽՍՀ գիտությունների ակադեմիայի նախագահությունում [At the Presidium of the Armenian Academy of Sciences]". Patma-Banasirakan Handes (in Armenian). № 3 (3): 3–4.
  121. ^ V.Gurzadyan, Hunger strike, Nature, 347, 610, 1990 "[1]"
  122. ^ a b Shogren, Elizabeth (21 September 1990). "Armenians Wage Hunger Strike in Regional Dispute: Soviet Union: Five threaten to starve themselves to death unless Moscow ends military rule in Azerbaijan enclave". Los Angeles Times.
  123. ^ a b Schodolski, Vincent J. (19 September 1990). . Chicago Tribune. Archived from the original on 2 December 2019. Alt URL
  124. ^ a b Nadler, Gerald (18 September 1990). . upi.com. United Press International. Archived from the original on 3 December 2019.
  125. ^ a b c d e Lynden-Bell & Gurzadyan 1998, p. 32.
  126. ^ Shakhbazyan 2011, p. 284.
  127. ^ a b Hambardzumyan, Viktor (1991). "Հայաստանի գիտությունների ակադեմիայում [In the Academy of Sciences of Armenia]". Patma-Banasirakan Handes (1): 3–6.
  128. ^ Shakhbazyan 2011, pp. 283–284.
  129. ^ . Aravot (in Armenian). 17 November 1995. Archived from the original on 3 December 2019.
  130. ^ Shakhbazyan 2011, p. 285.
  131. ^ Parsamian 2008, p. 195.
  132. ^ Astrachan, Anthony (24 September 1973). "BOOKS: Dogma in the Manger". The New Yorker. p. 125.
  133. ^ a b Staff correspondent (February 1968). "Picture of an Astrophysicist". Soviet Life (2): 56-57.
  134. ^ a b Shakhbazyan 2011, pp. 148–149.
  135. ^ Brutian 2008, p. 103.
  136. ^ Lynden-Bell & Gurzadyan 1998, p. 26.
  137. ^ Shakhbazyan 2011, p. 292.
  138. ^ Cherry, David (5 February 1992). "Black Hole Theory Faces Challenge". The New York Times. p. 22.
  139. ^ Petrosian, A. R.; Gurzadyan, V. G. (1996). "Astronomy in Armenia: Anticipations of a Second Wind". Quarterly Journal of the Royal Astronomical Society. 37: 231. Bibcode:1996QJRAS..37..231P. ...Ambartsumian, one of the foremost astronomers of the 20th century...
  140. ^ Israelian, Garik (16 September 2010). . Instituto de Astrofísica de Canarias. Archived from the original on 28 December 2019. Viktor Ambartsumian (1908-1996) was one of the most influential astronomers of the last century.
  141. ^ Einasto, Jaan (2013). Dark Matter And Cosmic Web Story. World Scientific. p. 141. ISBN 9789814551069. ... I visited in autumn 1977 Byurakan Observatory and discussed the idea with Viktor Ambartsumian, the most influential astronomer of the USSR.
  142. ^ Sullivan, Walter (26 October 1964). "Space Signals Said To Hint Life Afar". The New York Times. The observatory is the headquarters of Viktor A. Ambartsumian, Russia's foremost astronomer...
  143. ^ Gregersen, Erik, ed. (2009). The Universe: A Historical Survey of Beliefs, Theories, and Laws. Rosen Publishing Group. p. 163. ISBN 9781615300266. He was also the founder of the school of theoretical astrophysics in the Soviet Union.
  144. ^ Detre Centennial Conference: Proceedings (2006). Hungarian Academy of Sciences. p. 22 "This agreement obviously was a tribute of Victor Ambartsumian, the president of the Armenian Academy of Sciences and an astronomer of very high international reputation."
  145. ^ Shabad, Theodore (18 April 1979). "Soviet Claims Joint Credit for Finding Jupiter's Ring". The New York Times. p. 20. Viktor A. Ambartsumyan, a prominent and respected astronomer...
  146. ^ a b (PDF). amacad.org. p. 13. Archived from the original (PDF) on 20 December 2019. Ambartsumian, Viktor Amazaspovich (1908-1996) Election: 1958, FHM
  147. ^ "Soviet Rule Has Bestowed Upon Science all the Authority of Which it Deprived Religion". Time. Vol. 71. 2 June 1958. p. 23., reproduced in "Congressional Record—House". Congressional Record. U.S. Government Printing Office: 9922. 1958. The new Biurakan Observatory in Armenia has one of the world's largest telescopes, and one of the world's finest libraries in the field. The observatory's head, Viktor Ambartsumian, the first Soviet Scientist since World War II to become a foreign honorary member of the American Academy of Arts and Sciences.
  148. ^ a b Finney, John W. (11 June 1959). "U.S. GROUP HONORS SOVIET SCIENTIST; 2 Britons and German Also Elected as Associates by the National Academy". The New York Times.
  149. ^ "International Science Policy". Panel on Science and Technology. U.S. Congress House Committee on Science and Astronautics: 277–278. 27 January 1971.
  150. ^ Science and Technology in Armenia: Toward a Knowledge-Based Economy. Washington, D.C.: National Academies Press. 2004. p. 38. doi:10.17226/11107. ISBN 0-309-09278-7. The most famous twentieth-century scientist in Armenia was Victor Ambartsumian...
  151. ^ Magakian, T. Yu. (30 December 2003). "95th anniversary of V.A. AMBARTSUMIAN" (PDF). ArAS News. Armenian Astronomical Society. ....the greatest Armenian scientist, and one of the greatest astronomers of the XX century, Victor Ambartsumian.
  152. ^ Danielyan, Eduard L. [in Armenian] (2008). "The Contribution of Academician Victor Hambartsumyan to the History of Armenian and World Cosmological Thought and Astronomy". Lraber Hasarakakan Gitutyunneri. № 3: 256–259. The names of Anania Shirakatsi (610-685) in the Middle Ages and Victor Hambartsumyan (1908-1996) in modern times sparkle in the arena of cosmology and astronomy.
  153. ^ Avagyan, Sona (5 October 2010). . Hetq (in Armenian). Archived from the original on 6 December 2019. «Շիրակացին մեր ամենամեծ գիտնական է' իր ժամանակաշրջանի համար: Մենք իհարկե ունենք Վիկտոր Համբարձումյան, որը շատ ավելի կարևոր դեր է խաղացել գիտության մեջ: Չեմ ուզում այդպիսի համեմատություն անել, բայց եթե հարաբերական նայենք' ժամանակաշրջանի մեջ, գուցե և Շիրականցին է համար 1-ին մեր մտածողը եղել հայ ժողովրդի ամբողջ պատմության մեջ»,- այսօրվա մամուլի ասուլիսին ասաց Հայկական աստղագիտական ընկերության համանախագահ Արեգ Միքայելյանը:
  154. ^ a b . president.am. Archived from the original on 7 December 2019. Victor Hambardzumian - 11.10.1994
  155. ^ a b Editorial Board (1997). "Վիկտոր Համբարձումյան. 1908—1996 [Victor Hambartsoumian 1908-1996]". Lraber Hasarakakan Gitutyunneri (in Armenian) (1): 3–6.
  156. ^ a b "Banknotes out of Circulation - 100 drams". cba.am. Central Bank of Armenia.
  157. ^ Schmadel, Lutz D. (2007). "(1905) Ambartsumian". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 153. doi:10.1007/978-3-540-29925-7_1906. ISBN 978-3-540-00238-3.
  158. ^ (PDF). yerevan.am (in Armenian). Archived from the original (PDF) on 26 December 2019. Համբարձումյան/Վիկտոր/ փողոց․ Վիկտոր Համբարձումյանի անվան պուրակ
  159. ^ "Երևանի քաղաքապետարանի ենթակայության դպրոցներ [Yerevan municipal schools]". yerevan.am (in Armenian). Yerevan Municipality. Վիկտոր Համբարձումյանի անվան հ. 12 դպրոցը հիմնադրվել է 1940թ.: Կրթօջախն աշխարհահռչակ աստղագետի անունով կոչվել է 1996թ.
  160. ^ (PDF). erasmusplus.am. National Erasmus+ Office in Armenia. April 2016. Archived from the original (PDF) on 28 February 2019. Vardenis Pedagogical Institute after Victor Hambardzumyan
  161. ^ . panorama.am. 15 December 2009. Archived from the original on 5 December 2019.
  162. ^ "Հայաստանի Հանրապետության Գեղարքունիքի մարզի պատմության և մշակույթի անշարժ հուշարձանների պետական ցուցակը". arlis.am (in Armenian). Armenian Legal Information System. 9 January 2003. ՀՈՒՇԱՐՁԱՆ ՎԻԿՏՈՐ ՀԱՄԲԱՐՁՈՒՄՅԱՆԻ 1978 թ. Մշակույթի տան մոտ
  163. ^ . president.am (in Armenian). 16 April 2009. Archived from the original on 5 December 2019.
  164. ^ . vaprize.sci.am. National Academy of Sciences of the Republic of Armenia. Archived from the original on 5 December 2019.
  165. ^ "New international prize commemorates Viktor Ambartsumian". Astronomy & Geophysics. 50 (6): 6.6. December 2009. doi:10.1111/j.1468-4004.2009.50604_10.x.
  166. ^ . saf-astronomie.fr. Société astronomique de France. Archived from the original on 20 December 2019. 1956 : Viktor Ambartsumian (USSR)
  167. ^ a b c Redman, R. O (1960). "Presidential address on the award of the Gold medal to prof. V. A. Ambartsumian". Quarterly Journal of the Royal Astronomical Society. 1: 23–25. Bibcode:1960QJRAS...1...23. ()
  168. ^ Mayall, N. U. (April 1960). "Award of the Bruce Gold Medal to Prof. V. A. Ambartsumian". Publications of the Astronomical Society of the Pacific. Astronomical Society of the Pacific. 72 (425): 73–75. Bibcode:1960PASP...72...73M. doi:10.1086/127484.
  169. ^ . ras.ru (in Russian). Russian Academy of Sciences. Archived from the original on 20 December 2019. 1971 Амбарцумян Виктор Амазаспович за выдающиеся достижения в области астрономии и астрофизики
  170. ^ . ras.ru (in Russian). Russian Academy of Sciences. Archived from the original on 20 December 2019.
  171. ^ Hartkopf, Werner (1992). "Ambarzumjan, Viktor". Die Berliner Akademie der Wissenschaften: Ihre Mitglieder und Preisträger 1700–1990 (in German). Walter de Gruyter. p. 6. ISBN 9783050068633. 1971 Helmholtz-Medaille der Akademie
  172. ^ . leopoldina.org. leopoldina.org. Archived from the original on 20 December 2019. 1974 Viktor A. Ambarcumjan (1908 - 1996) Erevan Astronomie
  173. ^ Parsamian 2008, p. 98.
  174. ^ . aas.org. American Astronomical Society. Archived from the original on 2 December 2019. Viktor A. Ambartsumian* 1947
  175. ^ . ras.ac.uk. Archived from the original on 20 December 2019.
  176. ^ . academie-sciences.fr (in French). Archived from the original on 20 December 2019. Ambartsumian (Victor, Amazaspovitch) 18 septembre 1908 à Tbilissi, Géorgie, Russie - 20 août 1996 Élu correspondant le 22 décembre 1958 (section d'astronomie), puis associé étranger le 12 juin 1978
  177. ^ . rasc.ca. Archived from the original on 20 December 2019.
  178. ^ Kolchinsky, Edouard; Hossfeld, Uwe; Levit, Georgy S. (30 August 2017). "Russian scientists and the Royal Society of London: 350 years of scientific collaboration". Notes and Records: The Royal Society Journal of the History of Science. Royal Society. 72 (3): 343–363. doi:10.1098/rsnr.2017.0001. 24.04.1969 Viktor Amazaspovich Ambartsumian (1908–1996), astrophysicist, Foreign Member
  179. ^ . The Age. 19 March 1963. Archived from the original on 3 December 2019.
  180. ^ Parsamian 2008, p. 99.
  181. ^ Ambartsumyan, V. A. (1958). Theoretical Astrophysics. Translated by J. B. Sykes. London and New York: Pergamon Press.
  182. ^ Payne-Gaposchkin, Cecilia (May 1959). "Theoretical Astrophysics V. A. Ambartsumyan, Editor and J. B. Sykes". Physics Today. 12 (5): 56. doi:10.1063/1.3060822.
  183. ^ Field, George B. (June 1959). "Reviewed Work: Theoretical Astrophysics by V. A. Ambartsumyan, J. B. Sykes". American Scientist. 47 (2): 176A, 178A. JSTOR 27827344.
  184. ^ Redman, R. O. (1958). "Russian Astrophysics". Nature. 182 (4635): 548–549. Bibcode:1958Natur.182..548R. doi:10.1038/182548a0. S2CID 4293821.

Bibliography

Books on Ambartsumian
Journal articles
General books

External links

  • Oral history interview transcript with Viktor Amazaspovich Ambartsumian on 2 October 1987, American Institute of Physics, Niels Bohr Library & Archives
  • Ambartsumian bibliography at Sonoma State University
  • Ambartsumian bibliography at ambartsumian.ru

Further reading

  • Harutyunian, Haik; Sedrakian, David; Kalloghlian, Arsen; Nikoghossian, Arthur, eds. (2012). Ambartsumian's Legacy and Active Universe. New York: Springer-Verlag. ISBN 978-1-4614-0181-0.

January 30, 2023
viktor, ambartsumian, viktor, amazaspovich, ambartsumian, russian, Виктор, Амазаспович, Амбарцумян, armenian, Վիկտոր, Համազասպի, Համբարձումյան, viktor, hamazaspi, hambardzumyan, september, september, 1908, august, 1996, soviet, armenian, astrophysicist, scienc. Viktor Amazaspovich Ambartsumian c Russian Viktor Amazaspovich Ambarcumyan Armenian Վիկտոր Համազասպի Համբարձումյան Viktor Hamazaspi Hambardzumyan 18 September O S 5 September 1908 12 August 1996 was a Soviet Armenian 8 astrophysicist and science administrator One of the 20th century s top astronomers he is widely regarded as the founder of theoretical astrophysics in the Soviet Union Viktor AmbartsumianBorn18 September O S 5 September 1908Tiflis Russian Empire present day Tbilisi Georgia Died12 August 1996 1996 08 12 aged 87 Byurakan ArmeniaResting placeByurakanCitizenshipRussian Empire Soviet Union ArmeniaAlma materLeningrad State UniversityKnown forStellar associationSpouseVera nee Klochikhina 1930 1995 Children4 including RoubenAwardsGold Medal of the Royal Astronomical Society 1960 Bruce Medal 1960 ForMemRS 1969 Lomonosov Gold Medal 1971 National Hero of Armenia 1994 State Prize of Russia 1995 Scientific careerFieldsAstrophysicsInstitutionsLeningrad State UniversityPulkovo ObservatoryYerevan State UniversityByurakan ObservatoryThesisNone a Doctoral advisorAristarkh BelopolskyDoctoral studentsViktor Sobolev Benjamin Markarian Grigor GurzadyanInfluencedSubrahmanyan Chandrasekhar b Halton Arp 4 5 Geoffrey Burbidge 6 Adriaan Blaauw 7 SignatureEducated at Leningrad State University LSU and the Pulkovo Observatory Ambartsumian taught at LSU and founded the Soviet Union s first department of astrophysics there in 1934 He subsequently moved to Soviet Armenia where he founded the Byurakan Observatory in 1946 It became his institutional base for the decades to come and a major center of astronomical research He also co founded the Armenian Academy of Sciences and led it for almost half a century the entire post war period One commentator noted that science in Armenia was synonymous with the name Ambartsumian In 1965 Ambartsumian founded the journal Astrofizika and served as its editor for over 20 years Ambartsumian began retiring from the various positions he held only from the age of 80 He died at his house in Byurakan and was buried on the grounds of the observatory He was declared a National Hero of Armenia in 1994 Contents 1 Background 2 Education 3 Career 3 1 Leningrad 3 2 Armenia 3 2 1 Byurakan 4 Research 4 1 Stellar associations 4 2 Active galactic nuclei AGN 4 3 Astronomy from space 4 4 Mathematics 5 Science administration 5 1 Soviet Academy of Sciences 5 2 Armenian Academy of Sciences 5 3 International 6 Philosophical and cosmological views 6 1 Science and religion 6 2 Marxism Leninism and dialectical materialism 7 Political career and views 7 1 Soviet politics 7 2 Cold War politics 7 3 Armenian causes 7 3 1 Armenian genocide 7 3 2 Nagorno Karabakh 7 4 Soviet collapse and independence of Armenia 8 Personal life 8 1 Personality 8 2 Family 8 3 Retirement and death 9 Recognition 9 1 In Armenia 9 2 Tribute 9 3 Viktor Ambartsumian International Prize 10 Awards and honors 10 1 State awards 10 2 Professional awards 10 3 Membership 10 4 Honorary degrees 11 Publications 11 1 Theoretical Astrophysics 12 See also 13 References 14 Bibliography 15 External links 16 Further readingBackground EditAmbartsumian was born in Tiflis on 18 September 5 September in Old Style 1908 9 to Hripsime Khakhanian 1885 1972 10 and Hamazasp Hambardzumyan 1880 1966 11 12 Hripsime s father was an Armenian Apostolic priest from Tskhinvali 13 while Hamazasp hailed from Vardenis Basargechar 14 His ancestors moved from Diyadin what is now Turkey to the southern shores of Lake Sevan in 1830 in the aftermath of the Russo Turkish War 15 12 Hamazasp Russified Amazasp was an educated man of letters who studied law at Saint Petersburg University 14 9 He was also a writer and translator and notably translated Homer s Iliad into Armenian from Classical Greek 9 12 In 1912 he co founded the Caucasian Society of Armenian Writers which lasted until 1921 16 Ambartsumian was the secretary while Hovhannes Tumanyan the famed poet served as its president 12 Ambartsumian s parents married in 1904 17 He had a brother Levon and sister Gohar 18 His brother a geophysics student died at 23 24 while on an expedition in the Urals 19 9 Gohar 1907 1979 was a mathematician and Chair of Probability Theory and Mathematical Statistics at Yerevan State University towards the end of her life 20 Education EditAmbartsumian developed an early interest in mathematics and was able to multiply by the age of 4 His interest in astronomy began with reading a Russian translation of a book by Ormsby M Mitchel at 11 According to himself he became an astronomer at the age of 12 9 Between 1917 and 1924 he studied at Tiflis gymnasiums 3 and 4 where schooling was done in both Russian and Armenian In 1921 he transferred to gymnasium 4 to study under Nikolay Ignatievich Sudakov a Moscow educated astronomer whom Ambartsumian called a very serious teacher of astronomy Ambartsumian worked with Sudakov at the school observatory the latter had built 9 At school Ambartsumian wrote several papers on astronomy 21 and delivered lectures on the origin of the Solar System and extraterrestrial life at first in school and then in the various clubs and houses of culture beginning at 12 13 9 In 1924 Ambartsumian delivered a lecture at Yerevan State University about the theory of relativity He also met Ashot Hovhannisyan and Alexander Miasnikian Armenia s communist leaders 22 In 1924 Ambartsumian moved to Leningrad where he began attending the Herzen Pedagogical Institute According to Shakhbazyan it was his non peasant and non proletarian background that kept him from attending Leningrad State University LSU 11 However in an interview Ambartsumian stated that it was too late for him to apply to LSU because he arrived in August and admissions were already closed Not to lose a year he instead enrolled in the physics and mathematics department at the pedagogical institute 9 After a year he transferred to LSU s department of physics and mathematics 19 11 23 At university Ambartsumian was interested in both astronomy and mathematics I loved mathematics but at the same time I felt that my profession would be astronomy Mathematics was like a hobby but I did complete the full mathematics curriculum Thus you could say that I graduated with a major in mathematics but in fact it is recorded that I graduated as an astronomer he said in an interview in 1987 9 At LSU among his professors were the physicist Orest Khvolson and mathematician Vladimir Smirnov He studied alongside other major Soviet scientists such as Lev Landau Sergei Sobolev Sergey Khristianovich and George Gamow 19 In 1926 he published the first of his 16 scholarly papers as a student 23 19 He graduated in 1928 although he received his diploma only fifty years later in 1978 9 His undergraduate thesis was devoted to a study of radiative transfer radiative equilibrium 9 He completed his postgraduate 24 25 studies at the Pulkovo Observatory under Aristarkh Belopolsky between 1928 and 1931 23 11 26 Career EditLeningrad Edit After completing his postgraduate studies in 1931 Ambartsumian began working at the Pulkovo Observatory and teaching part time at LSU 9 1 In 1931 Ambartsumian began reading the first course on theoretical astrophysics in the Soviet Union 19 He also served as Pulkovo s scientific secretary in 1931 32 which involved mostly administrative work 9 2 Ambartsumian later characterized Pulkovo as being a very old institution and for this reason there were certain elements of ossification and stagnation Nevertheless this was the best qualified astronomical institution in the Soviet Union 9 In 1934 Ambartsumian was fired by Pulkovo director Boris Gerasimovich for alleged laziness Gerasimovich viewed Ambartsumian and other young astrophysicists as undisciplined and in too much of a rush to publish untested theories and poorly documented research Gerasimovich himself had a tendency to non cooperativeness 27 Gerasimovich was not taken seriously by them When in 1934 Subrahmanyan Chandrasekhar visited Leningrad he was told by Ambartsumian Look here here is a set of papers by Gerasimovich I turn to an arbitrary paper and to an arbitrary line I am sure you will find a mistake 28 Chandrasekhar stated in 1977 that during his visit in 1934 Ambartsumian was very free and very open He was extremely critical of his seniors 29 After leaving Pulkovo Ambartsumian founded the first department of astrophysics in the Soviet Union at Leningrad State University in 1934 30 23 9 19 In 1934 he was named professor at LSU and in 1935 he was named doctor of physical mathematical sciences without having to defend a thesis 1 31 32 based on his scientific work through that date 2 He headed the department until 1946 11 or 1947 23 19 Between 1939 and 1941 Ambartsumian was the director of the Astronomical Observatory of LSU He was simultaneously prorector deputy president of the university 23 Among his graduate students were Viktor Sobolev 2 Benjamin Markarian 9 Grigor Gurzadyan 33 and others Ambartsumian considered Sobolev his most brilliant graduate student 9 Stalin s purgesMany of Ambartsumian s colleagues and friends suffered during the Great Purge under Stalin most notably Nikolai Aleksandrovich Kozyrev 1908 83 with whom he became close friends in the mid 1920s 9 Kozyrev was sentenced to ten years in a forced labor camp but survived the repressions Others such as Matvei Petrovich Bronstein and Pulkovo director Boris Gerasimovich did not survive Ambartsumian s relations with Kozyrev were strained for the remainder of his life McCutcheon notes that while in the West some have questioned Ambartsumian s possible role in the terror there is no hard evidence to suggest that he was guilty of anything more serious than surviving at a time when others did not 2 World War IIAmbartsumian led the evacuation of part of the faculty of Leningrad State University to Elabuga Yelabuga Tatarstan in 1941 after the Nazi invasion of the Soviet Union There a branch of LSU operated under Ambartsumian s leadership until 1944 23 2 19 He served as the dean of the branch 26 Armenia Edit In 1943 34 26 Ambartsumian moved with his family to Yerevan Soviet Armenia where he lived until the end of his life 34 In the same year he co founded the Armenian Academy of Sciences along with scientists and scholars Hovsep Orbeli Hrachia Acharian Artem Alikhanian Abram Alikhanov Manuk Abeghian and others 35 He served as vice president of the academy until 1947 and as president from 1947 to 1993 19 Since 1943 Ambartsumian served as director of the Yerevan Astronomical Observatory 36 The small observatory was affiliated with Yerevan State University Ambartsumian had secured a nine inch telescope from Leningrad for the observatory Ambartsumian said that before the war this observatory did not rise significantly above the level of amateur variable star observations During the war they also carried out photographic observations of variable stars using a small camera 9 In 1945 1946 Ambartsumian founded the department of astrophysicists at Yerevan State University YSU 37 32 He was named professor of astrophysics at YSU in 1947 24 He served as chair of the department until 1994 37 d In 1965 Ambartsumian founded the journal Astrofizika Armenian Աստղաֆիզիկա Russian Astrofizika which has been published by the Armenian Academy of Sciences since then It was originally published in Russian subsequently articles in English began to appear He served as its editor in chief until 1987 2 The journal has also been published since the first issue in English by Springer in the US as Astrophysics 38 39 Byurakan Edit The Byurakan Observatory in 2008 Վիկտոր Համբարձումյանի թանգարանը Բյուրականում In 1946 Ambartsumian founded the Byurakan Astrophysical Observatory in the village of Byurakan at an altitude of 1 405 m 4 610 ft on the slopes of Mount Aragats some 35 km 22 mi from Yerevan 2 36 40 41 The first buildings were completed in 1951 41 though the official inauguration took place in 1956 42 Observations began to be carried out simultaneous with the construction of the observatory Our instruments stood under the open sky covered with tarpaulin said Ambartsumian 9 Ambartsumian initially lived at a house in the village of Byurakan then build a house within the observatory grounds with the money awarded with the 1950 Stalin Prize 34 Ambartsumian directed the Byurakan Observatory until 1988 and was named its honorary director that year 2 43 From 1946 until his death in 1996 the Byurakan Observatory served as Ambartsumian s institutional base 40 In 1960 Ambartsumian secured a Schmidt telescope with 40I 102 cm correcting plate and 52I 132 cm mirror for Byurakan 41 The telescope was reportedly made by Carl Zeiss AG in Nazi Germany in the 1930s and was transferred to Leningrad as spoils of war It was completed in Leningrad and sent to Armenia 44 Beginning with 1965 on Ambartsumian s initiative 45 Benjamin Markarian started the First Byurakan Survey that resulted in the discovery of the Markarian galaxies 41 A number of international symposiums and meetings were held at Byurakan under Ambartsumian s supervision 41 In 1968 the observatory was awarded the Order of Lenin the Soviet Union s highest civilian order for its great merit to the development of science 41 In 1961 Ambartsumian supervised the establishment of an astrophysical station of Leningrad State University his alma mater within the grounds of the Byurakan Observatory 19 It is where graduate students of the LSU did their summer internships until the late 1980s It was shut down in 1993 46 Ambartsumian and his disciples at the Byurakan Observatory became known in the scholarly literature as the Byurakan School 40 47 48 49 From 1977 to 1996 Ambartsumian headed a specialized council for theses defenses at Byurakan Over 50 scientists defended their PhD Candidate and Doctoral theses on astronomy astrophysics and theoretical physics in those years under Ambartsumian 41 Though most of the students were graduates of the astrophysics department of Yerevan State University 42 many came from Russia Georgia Ukraine Azerbaijan Hungary Bulgaria and elsewhere 50 Several symposiums of the International Astronomical Union and numerous conferences were held in Byurakan in attendance of Jan Oort Fritz Zwicky Subrahmanyan Chandrasekhar Pyotr Kapitsa Vitaly Ginzburg and others It was also visited by Soviet leaders Nikita Khrushchev and Leonid Brezhnev 50 With the Byurakan Observatory Ambartsumian put Armenia on the astronomical map 51 and made Soviet Armenia one of the world s centers for the study of astrophysics 52 By the time of his death in 1996 The New York Times described Byurakan as one of the world s leading astronomical research centers 53 As of 1960 the Byurakan Observatory maintained regular contact with 350 research institutions and with scientists from 50 countries 54 Research EditAmbartsumian carried out basic research in astronomy and cosmogony 26 9 His research covered astrophysics theoretical physics and mathematical physics 55 Most of his research focused on physics of nebulae star systems and extragalactic astronomy 9 He is best known for having discovered stellar associations and predicted activity of galactic nuclei 30 In his later career Ambartsumian held views in contradiction to the consequences of the general relativity such as rejecting the existence of black holes 25 Stellar associations Edit In 1947 Ambartsumian discovered stellar associations a new type of stellar system which led to the conclusion that star formation continues to take place in the Milky Way galaxy 56 9 57 53 58 59 At the time the idea of star formation as an ongoing process was regarded as very speculative 60 His discovery was announced in a short publication 61 by the Armenian Academy Sciences 50 Ambartsumian s discovery was based on his observation of stars of O and B spectral types and T Tauri and flare stars that cluster very loosely 50 This is significantly different from open clusters which have a higher density of stars while stellar associations have lower than average density 50 Ambartsumian divided stellar associations into OB and T groups 60 and concluded that the associations have to be dynamically unstable configurations and must expand subsequently dissolving to form field stars 50 He thus argued that star forming is ongoing in the galaxy and that stars are born explosively 62 and in groups 26 50 Ambartsumian s concept was not immediately accepted Chandrasekhar noted the early scepticism with which this discovery was received by the astronomers of the establishment when I first gave an account of Ambartsumian s paper at the colloquium at the Yerkes Observatory in late 1950 63 Chandrasekhar noted that Ambartsumian s discovery of stellar associations had far reaching implications for subsequent theories relating to star formation 3 McCutcheon noted that the discovery opened an entirely new field of astrophysical research 2 Active galactic nuclei AGN Edit Ambartsumian began studying nuclei of galaxies in the mid 1950s 64 He found that clusters of galaxies are unstable and that galaxy formation is still ongoing 2 At the 1958 Solvay Conference on Physics in Brussels he gave a famous lecture in which he claimed enormous explosions take place in galactic nuclei and as a result a huge amount of mass is expelled In addition if this is so these galactic nuclei must contain bodies of huge mass and unknown nature 60 Ambartsumian s report essentially introduced active galactic nucleus AGN as a major theory of galactic evolution 2 The concept of AGN was widely accepted some years later 60 Astronomy from space Edit Ambartsumian was a pioneer of astronomical research from Soviet spacecraft 62 The program was directed by his disciple Grigor Gurzadyan and was launched in 1961 In April 1971 the Salyut 1 space station carried Orion 1 the first space telescope with an objective prism into orbit In December 1973 the manned Soyuz 13 mission operated the Orion 2 ultraviolet Cassegrain telescope with a quartz objective prism built in the Byurakan Observatory Spectra of thousands of stars to as faint as thirteenth magnitude were obtained as was the first satellite ultraviolet spectrogram of a planetary nebula revealing lines of aluminium and titanium elements not previously observed in planetary nebulae 65 These activities especially the space missions when for example a special manned spaceship had to be devoted to an experiment from the smallest Soviet republic needed powerful backing both in Kremlin corridors and within the top secret rocket industry establishment This was achieved due to Ambartsumian s political skills with the active support of Mstislav Keldish the then President of the Academy of Sciences of the USSR 39 Mathematics Edit Ambartsumian also made contributions to mathematics most notably with his 1929 paper in Zeitschrift fur Physik 66 1 In it Ambartsumian first introduced the inverse Sturm Liouville problem 67 68 69 He proved that among all vibrating strings only the homogeneous vibrating string has eigenvalues that are specific to it that is homogeneous vibrating strings have a spectrum of eigenvalues 2 It was only in the mid 1940s when his paper received attention and became a significant research topic in the ensuing decades 2 He commented when an astronomer is publishing a mathematical paper in a physical journal he cannot expect to attract too many readers 1 Science administration Edit As well as being one of the giants of astronomical research in the 20th century Viktor Ambartsumian was also a great leader and organizer of science in Armenia in Russia and on the international level Geoffrey Burbidge 70 Soviet Academy of Sciences Edit Ambartsumian was elected corresponding member of the USSR Academy of Sciences in 1939 and full member academician in 1953 23 2 In 1955 he became a member of the academy s presidium the governing body 2 71 He also chaired the Academy s Joint Coordinating Scientific Council on astronomy which was responsible for the priorities and all major decisions in all of astronomy 39 He was also chairman of the academy s commissions on astronomy 1944 46 and cosmogony 1952 64 2 71 In these positions Ambartsumian was one of the most powerful scientists of his time 62 McCutcheon noted that Ambartsumian s towering authority as an astrophysicist combined with his position in the Soviet establishment made him arguably the most powerful Soviet astronomer of his day 2 He was often the official head of Soviet delegations at many conferences not only on astronomy but also on natural philosophy 39 From 1944 to 1979 Ambartsumian was a member of the editorial board of Astronomicheskii zhurnal also known as Astronomy Reports the Soviet Union s main astronomy journal 2 38 He was also on the editorial board of Doklady Akademii Nauk SSSR Proceedings of the USSR Academy of Sciences 39 Armenian Academy of Sciences Edit Although the Armenian branch of the Soviet Academy of Sciences was established in 1935 it was not until 1943 that the National Academy of Sciences of the Armenian SSR was founded Ambartsumian was one of its original co founders along with other prominent scholars and scientists including Hovsep Orbeli who became its first president Ambartsumian initially served as vice president 2 34 and in 1947 he became the academy s second president serving for 46 years until 1993 35 2 When he stepped down in 1993 he was declared honorary president of the academy 30 Rouben Paul Adalian wrote that Ambartsumian exercised enormous influence in the advancement of science in Soviet Armenia and was revered as his country s leading scientist 52 McCutcheon went on to note that From that point forward science in Armenia was synonymous with the name Ambartsumian 2 As president of the principal coordinating body for scientific research in Soviet Armenia Ambartsumian played a significant role in promoting the sciences in the country 34 He actively promoted the natural and exact sciences including physics and mathematics radioelectronics chemistry mechanics and engineering 32 Artashes Shahinian noted that Ambartsumian played a significant role in the development of the physical and mathematical sciences 72 He played an instrumental role in the establishment and development of the Yerevan Scientific Research Institute of Mathematical Machines YerNIIMM in 1956 71 popularly known as the Mergelyan Institute after its first director mathematician Sergey Mergelyan 73 Apoyan rejects that Ambartsumian had a direct involvement in its creation and characterizes his role as favorable neutrality 74 Overall Apoyan criticizes Ambartsumian s role in science administration He wrote that he had a tendency to fail projects that did not directly serve his fame 74 He went as far as call Ambartsumian s role similar to that of a tyrant 74 Ambartsumian and Mergelyan had a complicated relationship In 1971 Ambartsumian persuaded him to return to Armenia from Moscow and become vice president of the Armenian Academy of Sciences However in 1974 Mergelyan was not reelected to the presidium of the academy and was forced to leave it Some academicians called for a revote but Ambartsumian rejected any such attempts Oganjanyan and Silantiev note that Ambartsumian was rumored to have seen Mergelyan as a rival for the academy s president and decided to get rid of the competitor forever 73 Ambartsumian was the Chairman of the Editorial Board of the Armenian Soviet Encyclopedia Haykakan Sovetakan Hanragitaran 32 52 published in 12 volumes in 1974 86 75 A supplementary volume devoted to Soviet Armenia was published in 1987 76 Works on the encyclopedia began in 1967 Although it reflected the government s Marxist Leninist viewpoint is in the most comprehensive encyclopedia in the Armenian language to this day Each volume was published in 100 000 copies 77 International Edit According to Jean Claude Pecker Ambartsumian had a very strong influence on world astropolitics and is one of the few astronomers who have had such a deep influence on the life of the international bodies devoted to the promotion and defense of astronomy and science in general 78 International Astronomical UnionAmbartsumian was a member of the International Astronomical Union IAU since 1946 He served as vice president of the IAU from 1948 to 1955 then as president from 1961 to 1964 79 2 43 As Vice President Ambartsumian attempted to have the IAU General Assembly be held in Leningrad in 1951 however the IAU Executive Committee canceled the assembly increasing tensions within the IAU An IAU General Assembly eventually took place in Moscow in 1958 79 Ambartsumian headed the organizing committee 39 Blaauw noted that During these years Ambartsumian although violently opposing the IAU s policy remained loyal to the Executive Committee s majority decisions for the sake of safeguarding international collaboration an attitude that contributed to his election as President of the IAU in 1961 79 He continued to support it as the world wide organization embracing astronomers from all countries His election as President of the IAU in 1961 reflected both the appreciation for his efforts in this respect and his outstanding scientific achievements 24 Ambartsumian was outspoken about the importance of international cooperation At the 1952 IAU General Assembly in Rome he declared We believe that the joint study of such large problems as that of the evolution of celestial bodies will contribute to the cultural rapprochement of different nations and to a better understanding among them This is our modest contribution to the noble efforts toward maintaining peace throughout the world 80 At the 1963 IAU symposium in Sydney he stated that while competition between nations is important it should be associated with co operation 81 International Council of Scientific UnionsAmbartsumian also served as president of the International Council of Scientific Unions ICSU between 1968 and 1972 being elected twice for two year terms in 1968 and 1970 82 43 He was the first individual from the Eastern bloc to be elected to that post 83 Philosophical and cosmological views EditAmbartsumian published several books and articles on philosophy including Philosophical Questions About the Science of the Universe 1973 84 In a 1968 paper Ambartsumian wrote that he believes in a close collaboration of philosophy and the natural sciences to solve the main scientific problems about nature 85 Ambartsumian became a member of the administration of the Philosophical Society of the Soviet Union when it was established in 1971 In 1990 he became honorary president of the Philosophical Society of Armenia which was created through his efforts 84 Science and religion Edit Ambartsumian was an atheist 86 and believed that science and religion are irreconcilable 80 Ambartsumian wrote in 1959 87 Since Copernicus challenged ecclesiastical authority in explaining nature astronomy began to gradually gain one position after another expelling God from all parts of the material world The development of science today has brought a final triumph to atheism The idea of the existence of God the idea of world creation has been defeated entirely For over four decades e he headed Gitelik the Armenian branch of the all Soviet organization Znaniye Knowledge founded in 1947 to continue the pre war atheist work of the League of Militant Godless 89 90 It published atheist novels and journals produced films and organized lectures on the supremacy of science over religion 91 The organization engaged in what it called scientific atheistic propaganda 92 Despite his atheism Ambartsumian reportedly felt that Christianity has been important in preserving Armenian identity 93 According to one associate Ambartsumian self identified as an Armenian Christian but was not religious 94 Ambartsumian had friendly relations with Vazgen I the long time head Catholicos of the Armenian Apostolic Church especially since at least the late 1980s f In 1969 Ambartsumian visited San Lazzaro degli Armeni in Venice home of the Armenian Catholic congregation of the Mekhitarists 98 and was declared an honorary member of the San Lazzaro Armenian Academy that year 99 Marxism Leninism and dialectical materialism Edit Ambartsumian accepted and followed Marxist Leninist philosophy 80 and staunchly promoted dialectical materialism and projected it on his astrophysical interpretations 2 Helge Kragh described Ambartsumian as a convinced Marxist 80 He wrote on Marxism Leninism and dialectical materialism in 1959 100 g The history of the development of human knowledge each step forward in science and technology each new scientific discovery irrefutably attests to the truth and fruitfulness of dialectical materialism affirms the correctness of the Marxist Leninist teaching concerning the knowability of the world the magnitude and transforming power of the human mind which is penetrating ever deeper into the secrets of nature At the same time the achievements of science convincingly demonstrate the complete unsoundness of idealism and agnosticism and the reactionariness of the religious world view Dialectical materialism influenced Ambartsumian s cosmological views and ideas 80 According to Loren Graham perhaps no great Soviet scientist has made more outspoken statements in favor of dialectical materialism than Ambartsumian 102 Mark H Teeter wrote in a 1981 report that Ambartsumian is one of a rather limited group of Soviet scholars of international stature who claim that dialectical materialism has assisted them in their work 103 Kragh noted that Ambartsumian was not a cosmologist but an astrophysicist and that his ideas of the universe were influenced both by his background in astrophysics and his adherence to Marxist Leninist philosophy 80 Graham notes that his praise of dialectical materialism has been voiced again and again over the years these affirmations have come when political controls were rather lax as well as when they were tight We have every reason to believe that they reflect at root his own approach to nature 102 Political career and views Edit Ambartsumian Ambartsumian is often referred to as a politician Donald Lynden Bell called him a skillful one 51 In a 1977 interview Subrahmanyan Chandrasekhar went as far as to opine that Ambartsumian has been much more of a politician than an astronomer since the mid 1940s 29 Lyudvig Mirzoyan a colleague and friend wrote that Ambartsumian was a true patriot of his native land Soviet Armenia and all the Soviet Union and simultaneously he was a convinced internationalist 104 He was described by a US based Soviet government printed magazine as an ardent advocate of the widest possible international scientific exchange 54 Soviet politics Edit McCutcheon noted that Ambartsumian s life was shaped and directed by the Soviet system and he was politically loyal to the Soviet authorities 2 Loren Graham noted that At the same time Ambartsumian was not afraid to reprimand the Communist Party ideologues when they obstructed his research 105 Ronald E Doel noted that Ambartsumian was in favor with the Communist Party and enjoyed the freedom to travel to the West 106 Adriaan Blaauw wrote that his political views harmonized to a considerable degree with those of Soviet rulers 79 McCutcheon wrote the following on his relationship with the Soviet system 2 Ambartsumian was a patriot who believed his country was at the forefront of a great movement that would transform the world and improve the lot of mankind everywhere Whereas his close friend and collaborator Nikolai Kozyrev would be rudely disabused of this notion in the late 1930s all evidence indicates that Ambartsumian remained committed to the Soviet system to the end His scientific genius combined with his political loyalty took him to the heights of the Soviet scientific establishment Ambartsumian jointed the Communist Party of the Soviet Union CPSU in 1940 2 In 1948 he became a member of the Central Committee the executive branch of the Communist Party of the Armenian SSR 2 Ambartsumian was also a member of the Supreme Soviet from 1950 to 1989 3rd to 11th convocation sessions 104 2 In 1989 he was elected as a representative from Armenia to the Congress of People s Deputies of the Soviet Union in the first relatively free elections 107 Ambartsumian was a delegate to the 19th 1952 20th 1956 22nd 1961 23rd 1966 24th 1971 25th 1976 and 26th 1981 congresses of the CPSU 104 Cold War politics Edit Ambartsumian often signed open letters in support of the official line of the Soviet authorities In 1971 he was among leading 14 Soviet scientists who signed a letter to U S President Richard Nixon in support of black militant communist Angela Davis and appealed him to give her an opportunity of continuing her scientific work 108 In 1983 Ambartsumian was among 244 Soviet scientists who signed a statement attacking U S President Ronald Reagan s Strategic Defense Initiative Star Wars namely Reagan s plan for an effective defense against nuclear attack The scientists stated that Reagan is creating a most dangerous illusion that may turn into an even more threatening spiral of the arms race 109 Ambartsumian s relationship with dissidents was complicated In 1973 he refused to meet Yuri Orlov nuclear physicist and a prominent dissident after having offered him a job in Yerevan Ambartsumian told him through subordinate that there are situations when even an Academy member is helpless 110 In 1975 he was among 72 Soviet scientists who denounced the award of the Nobel Peace Prize to Soviet physicist and dissident Andrei Sakharov 111 Armenian causes Edit Ambartsumian revered the Armenian language and supported its usage 112 113 114 He insisted all internal communication of the Armenian Academy of Sciences be done in Armenian when he became president in 1947 112 As president of the Armenian Academy of Sciences Ambartsumian often gave speeches at major events such as during the commemorations of the 1600th anniversary of Mesrop Mashtots the inventor of the Armenian alphabet in 1962 115 and the 100th anniversary of Hovhannes Tumanyan Armenia s national poet in 1969 116 Armenian genocide Edit Ambartsumian delivered a speech on 24 April 1965 on the 50th anniversary of the Armenian genocide describing it as extermination of the Armenian population of Western Armenia He linked it to the 45th anniversary of Soviet Armenia and the revival of the Armenian people as a result of the October Revolution 117 118 In an article published in Pravda on 24 April 1975 Ambartsumian linked the Armenian genocide to the Holocaust and blamed German imperialism during World War I for inspiring the Young Turks and the capitalist states for failing to defend the innocent Armenian population and praised the October Revolution for saving the Armenian nation 119 Nagorno Karabakh Edit In November 1989 the Armenian Academy of Sciences led by Ambartsumian issued a statement protesting the decision of the Supreme Soviet of the Soviet Union to return Nagorno Karabakh to the direct jurisdiction of Soviet Azerbaijan 120 In September 1990 Ambartsumian and four other Armenians including writer Zori Balayan and actor Sos Sargsyan went on a hunger strike at the Hotel Moskva in Moscow to protest the military rule over Nagorno Karabakh declared by Mikhail Gorbachev 121 122 Ambartsumian celebrated his 82nd birthday hunger striking 123 124 He insisted that Gorbachev had violated the Soviet constitution by keeping Nagorno Karabakh under direct rule from Moscow This is a bad thing when a government does not abide by its own laws he argued He also stated My desire is that Karabakh be part of Armenia This is a problem that has to be solved with a long process and with concessions 123 Ambartsumian stated that his only demand is that the elected leaders of Nagorno Karabakh regain control 122 Ambartsumian called the hunger strike a modest step aimed at making a huge resonance in the world to let the world know 124 The Soviet authorities totally ignored the strike 125 He ended it after 9 days only when Catholicos Vazgen I persuaded him to do so 126 112 125 On 11 May 1991 Ambartsumian and a number of members of the Armenian Academy of Sciences wrote a letter to Soviet President Mikhail Gorbachev expressing their concern with the forced expulsion of ethnic Armenians from parts of NKAO and Shahumian rayon as part of Operation Ring 127 Soviet collapse and independence of Armenia Edit In June 1991 the session of the Armenian Academy of Sciences issued a statement on its views on Armenian independence and the future of the Soviet Union The Academy stated its unconditional support for the independence of Armenia pushed at the time by the Pan Armenian National Movement HHSh However it argued that because Armenia is economically interconnected with and dependent on other Soviet republics an abrupt disruption in the existing relations would result in unimaginable levels of economic collapse unemployment and emigration Thus they called for Armenia to join the New Union Treaty proposed by Gorbachev The session also argued that leaving the Soviet Union would mean to abandon Nagorno Karabakh 127 As a communist Ambartsumian reportedly regretted the collapse of the Soviet Union but voted for Armenia s independence in the 1991 referendum He appreciated independent Armenia but reminded Armenians that they will be paying a high price for it 128 In 1995 he congratulated Armenians worldwide with Armenia s independence and stated that the newly independent republic is moving forward 129 According to Yuri Shahbazyan a friend and biographer of Ambartsumian he remained sympathetic towards the Communist Party of Russia and was critical of Western sponsored economic liberalization in Russia and other post Soviet countries 130 Personal life Edit Ambartsumian s house museum in Byurakan where he lived since around 1950 and died in 1996 A memorial in front of Ambartsumian s house in Yerevan When Ambartsumian was referred to by foreigners as a Russian scientist he corrected them by saying he was Armenian He spoke perfect Armenian albeit with an accent 44 Between 1946 and 1996 Ambartsumian mostly divided his time between Yerevan and Byurakan He built himself a house within the Byurakan Observatory with the award money that came with his second Stalin Prize in 1950 34 Since 1960 he also maintained a house next to the building of the Academy of Sciences in Yerevan on Baghramyan Avenue Personality Edit Donald Lynden Bell characterized Ambartsumian as a broad shouldered thickset man of medium height quick intellect and strong character 51 Lynden Bell and Vahe Gurzadyan wrote that Ambartsumian was modest in private life and behaved simply in public 125 Fadey Sargsyan described Ambartsumian as an extremely modest man 131 Anthony Astrachan wrote in The New Yorker that Ambartsumian is by all reports an engaging human being 132 Ambartsumian admitted to not having any hobbies My only passion is science astronomy Like a jealous wife it expects a man to give all of himself 133 However he loved poetry and music 51 and could enliven even the most abstract mathematical lectures with quotations from classical and contemporary poets 58 Family Edit In 1930 or 1931 Ambartsumian married Vera Fyodorovna nee Klochikhina an ethnic Russian who was the niece and the adopted daughter of Pelageya Shajn the wife of Grigory Shajn both Russian astronomers 9 134 135 136 She was an English teacher who taught him to read his papers in English when he visited the U S and Britain However she could not reconcile with his barbarous pronunciation as she described it 133 He was deeply depressed by her death in 1995 125 They had four children daughters Karine b 1933 and Yelena b 1936 and sons Rafayel b 1940 and Rouben b 1941 All four became either mathematicians or physicists 134 58 As of 1987 he had eight grandchildren 9 Retirement and death Edit Ambartsumian began retiring from the various positions he held in 1988 at 80 He left the position of the director of the Byurakan Observatory that year In 1993 he stepped down as president of the Armenian Academy of Sciences and in 1994 as chair of astrophysics at Yerevan State University 30 37 Ambartsumian died at his house at the Byurakan Observatory complex on 12 August 1996 a month before his 88th birthday 2 53 84 The house was opened as his museum in August 1998 84 He was buried at the observatory grounds next to his wife and parents 137 His funeral was attended by thousands of people including Armenia s president Levon Ter Petrosyan 125 Recognition Edit Ambartsumian s statue in Yerevan Ambartsumian was one of the leading astrophysicists h and astronomers of the 20th century 139 140 i In 1977 Subrahmanyan Chandrasekhar stated My own impression has always been that he was when he was in his prime one of the most perceptive and elegant of astronomers 29 Chandrasekhar wrote in 1988 3 Academician Ambartsumian s realm does not divide astronomy and astrophysics into its conventional parts theoretical and observational He is an astronomer par excellence There can be no more than two or three astronomers in this century who can look back on a life so worthily devoted to the progress of astronomy Ambartsumian was arguably the leading astronomer of the Soviet Union 141 142 and is universally recognized as the founder of the Soviet school of theoretical astrophysics 143 57 j He was also well regarded internationally 144 k Loren Graham called him one of the best known abroad of all Soviet scientists 102 He was an honorary or foreign member of academies of sciences of over 25 countries 60 Despite being a Soviet scientist he was well regarded in the United States 145 During the Cold War Ambartsumian was the first Soviet scientist to become foreign honorary member of the American Academy of Arts and Sciences and foreign associate of the National Academy of Sciences in 1958 and 1959 respectively 146 l In January 1971 Ambartsumian was invited to the U S House Committee on Science and Astronautics where he was introduced by Fred Lawrence Whipple as a man who is rated the world s greatest astronomer or at least among the very greatest 149 In Armenia Edit Ambartsumian is recognized as the greatest scientist in 20th century Armenia 150 He is considered the greatest Armenian scientist m 151 since Anania Shirakatsi the seventh century astronomer 152 153 Fadey Sargsyan Ambartsumian s successor as President of the Armenian Academy of Sciences stated in 1998 that Ambartsumian is one of those scientists who in his merits and reputation goes beyond the limits of his scientific fields and in his own lifetime becomes a great national figure He can truly be called a great Armenian 84 On 11 October 1994 Armenia s President Levon Ter Petrosyan awarded Ambartsumian the title of a National Hero of Armenia 154 for his scientific work of international significance science administration and patriotic activism 155 His official obituary was signed by Armenia s president government and parliament 155 Ambartsumian appeared on the 100 dram banknote 1998 2004 156 Tribute Edit An asteroid discovered at the Crimean Astrophysical Observatory in 1972 by Tamara Smirnova is named 1905 Ambartsumian 157 In 1998 Ambartsumian s 90th anniversary was celebrated in Armenia the International Astronomical Union held a symposium at the Byurakan Observatory 84 and the Central Bank of Armenia issued a 100 dram banknote depicting Ambartsumian and the Byurakan Observatory 156 The Byurakan Observatory was officially named after Ambartsumian that year 41 Other things named after Ambartsumian include Chair of General Physics and Astrophysics at Yerevan State University 37 a street park and public school in Yerevan 158 159 and the Pedagogical Institute of Vardenis 160 In 2009 a 3 2 metre 10 ft bronze statue of Ambartsumian was unveiled in Yerevan at the park around the Yerevan Observatory in attendance of President Serzh Sargsyan and other officials 161 Busts of Ambartsumian stand at the Byurakan Observatory the city of Vardenis 1978 162 and at the central campus of Yerevan State University 32 Viktor Ambartsumian International Prize Edit In 2009 President of Armenia Serzh Sargsyan signed a decree to establish an international prize in Ambartsumian s memory 163 It was first awarded in 2010 and is awarded every two years The prize was initially 500 000 but was reduced to 300 000 in 2018 164 It is considered one of the prestigious awards in astronomy and related fields 165 Awards and honors EditState awards Edit Soviet Union 43 23 Honored Scientist of the Armenian SSR 1940 and the Georgian SSR 1968 Order of Lenin 1945 1958 1974 1978 USSR State Prize 1946 1950 Order of the Red Banner of Labour 1953 Medal For Labour Valour 1960 Hero of Socialist Labour 1968 1978 Order of the October Revolution 1983 ArmeniaNational Hero of Armenia 1994 154 Foreign countriesOrder of Cyril and Methodius People s Republic of Bulgaria 1969 43 State Prize of the Russian Federation 1995 23 Professional awards Edit Janssen Prize Prix Jules Janssen of Societe astronomique de France 1956 166 Gold Medal of the Royal Astronomical Society 1960 for outstanding contributions to astrophysics 167 Bruce Medal of the Astronomical Society of the Pacific 1960 168 Lomonosov Gold Medal of the Soviet Academy of Sciences for outstanding achievements in the field of astronomy and astrophysics 1971 169 170 Helmholtz Medal Helmholtz Medaille of the Academy of Sciences of the German Democratic Republic 1971 171 Cothenius Medal Cothenius Medaille of the Academy of Sciences Leopoldina 1974 172 Membership Edit Soviet UnionCorresponding Member of the USSR Academy of Sciences 1939 23 Full member Academician of the Armenian SSR Academy of Sciences 1943 43 Full member Academician of the USSR Academy of Sciences 1953 23 Honorary member of the Academies of Sciences of the Georgian SSR and Azerbaijan SSR 173 AbroadAmbartsumian was elected honorary and foreign member of 28 Academies of Sciences 43 including Honorary Member of the American Astronomical Society 1947 174 Associate of the Royal Astronomical Society 1953 175 Corresponding member 1958 and foreign associate 1978 of the French Academy of Sciences 176 Foreign Honorary Member of the American Academy of Arts and Sciences 1958 146 Foreign Associate of the U S National Academy of Sciences 1959 148 Honorary Member of the Royal Astronomical Society of Canada 1959 177 Foreign Member of the Royal Society 1969 178 Honorary degrees Edit Ambartsumian received honorary doctorates from several universities Australian National University 1963 179 University of Paris 1967 University of Liege 1967 Charles University in Prague 1967 Nicolaus Copernicus University in Torun 1973 National University of La Plata 1974 43 180 Publications EditThroughout his career Ambartsumian authored some 20 books and booklets and over 200 academic papers 43 In 1939 he published the first systematic textbook in Russian on theoretical astrophysics based on his lectures at Leningrad State University 167 1 Theoretical Astrophysics Edit Ambartsumian served as editor and senior author of the 1952 book Teoreticheskaia Astrofizika Teoreticheskaya astrofizika 1 It was translated into a number of languages including English German and Chinese 1 The English translation appeared in 1958 as Theoretical Astrophysics 181 2 Roderick Oliver Redman noted in 1960 that it has found many appreciative readers in both German and English speaking countries 167 It became a bible for a generation of astronomers and astrophysicists 60 2 The book received critical acclaim by contemporary astronomers Cecilia Payne Gaposchkin wrote that it is the only advanced book of this scope in English it will be of the greatest value 182 George B Field described the book as comprehensively and competently constructed 183 Redman wrote It is a welcome addition to the comparatively few general texts of solid worth which are now available 184 See also EditArmenians in TbilisiReferences EditNotes Ambartsumian did not defend a doctoral thesis 1 He was awarded a doctoral degree in 1935 based on his scientific work hitherto 2 The formulation of the principles of invariance in the theory of radiative transfer a theoretical innovation that is of the greatest significance Many papers were contributed to a symposium on this topic at Byurakan in the fall of 1982 and in my contribution to that symposium I narrated the influence of Academician Ambartsumian s ideas on my own related work 3 Ambartsumian is the most commonly accepted spelling of his last name in English It comes from the Russified version is his Armenian last name which using the standard romanization is transliterated as Hambardzumyan ian Less common spellings of his last name include Ambarzumian used until the 1930s and Ambartsumyan commonly used by Soviets in English publications The departments of astrophysics and general physics merged in 2009 37 The organization effectively ceased to operate during the dissolution of the Soviet Union in 1990 when the last of its publications were made 88 In 1988 Vazgen I publicly congratulated Ambartsumian s 80th anniversary in 1988 95 Ambartsumian and the four other prominent Armenians hunger striking in Moscow sent a letter to Vazgen I on his birthday on 20 September 1990 expressing their admiration for him Your holy faith and your sublime example of selflessly serving the nation give us strength and endurance read the statement 96 Vazgen I was made honorary member of the Ambartsumian led Armenian Academy of Sciences in 1991 97 Also cited in 80 101 recognized as one of the giants of twentieth century astrophysics 2 Victor Ambartsumian a giant of world astrophysics alive 138 Geoffrey Burbidge one of the giants of astronomical research in the 20th century 70 Russian Academy of Sciences osnovopolozhnik sovetskoj shkoly teoreticheskoj astrofiziki 23 Andrei Severny and Viktor Sobolev V A Ambartsumyan is considered to be by right the founder of Soviet theoretical astrophysics 26 Garik Israelian It is commonly accepted that V A Ambartsumian was a father of the Soviet school of Theoretical Astrophysics 60 A David Andrews This eminent founder of astrophysics in the former Soviet Union 58 The authors of a 1981 US government report described him as among the Soviet Union s best known and most respected scientists abroad 103 the first Soviet Scientist since World War II to become a foreign honorary member of the American Academy of Arts and Sciences 147 The National Academy of Sciences announced today that Viktor A Ambartsumyan a Soviet astronomer had been made a foreign associate of the academy the first Soviet scientist to be so honored in over a decade 148 Areg Mikayelyan director of Byurakan Observatory since 2017 I can now say that he was the greatest scientist in Armenian history 44 Citations a b c d e f g h Lynden Bell amp Gurzadyan 1998 p 25 a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag McCutcheon Robert A 1 November 2019 Ambartsumian Viktor Amazaspovich Complete Dictionary of Scientific Biography Encyclopedia com Archived from the original on 3 December 2019 a b c Chandrasekhar S 1988 To Victor Ambartsumian on his 80th birthday Astrofizika 29 1 7 8 Bibcode 1988Afz 29 7C Reprinted in Chandrasekhar S 1988 To Victor Ambartsumian on his 80th birthday Astrophysics 29 1 408 409 Bibcode 1988Ap 29 408C doi 10 1007 BF01005852 S2CID 122547053 Chandrasekhar S 1997 To Victor Ambartsumian on his 80th birthday Journal of Astrophysics and Astronomy 18 1 3 4 Bibcode 1997JApA 18 3C doi 10 1007 BF02714848 S2CID 121290161 Cherry David 30 January 1995 A Galactic Smoking Gun The Washington Post the theory of Armenian astrophysicist Viktor Ambartsumian in his Problems of Modern Cosmogony available for 20 years in Russian German and French The theory was modified and elaborated by the American astronomer Halton Arp in his widely read Quasars Redshifts and Controversies 1987 Overbye Dennis 6 January 2014 Halton Arp 86 Dies Astronomer Challenged Big Bang Theory The New York Times Looking them up in the Palomar library he realized that many of those radio sources were quasars that could have been shot out of a nearby galaxy an idea first explored by the Armenian astronomer Victor Ambartsumian a decade earlier Longair Malcolm Rees Martin 2017 Obituary Geoffrey Ronald Burbidge 24 September 1925 26 January 2010 Biographical Memoirs of Fellows of the Royal Society 63 doi 10 1098 rsbm 2017 0002 Geoff was sympathetic to this as it was related to the radical ideas of the influential Armenian astronomer Viktor A Ambartsumian ForMemRS 1969 who envisaged the centres of galaxies as places where new matter was created Oral Histories Adriaan Blaauw aip org American Institute of Physics 19 August 1979 So Ambartsumian s papers became known to us and I studied those Sullivan Walter 26 August 1964 NEW ERA AHEAD ASTRONOMER SAYS Photos of the Moon Cited at World Science Parley The New York Times p 13 The great Soviet Armenian astronomer Viktor A Ambartsumian a b c d e f g h i j k l m n o p q r s t u v w x y McCutcheon Robert 2 October 1987 Oral Histories V A Ambartsumian Niels Bohr Library amp Archives American Institute of Physics Archived from the original on 2 December 2019 Originally published in McCutcheon R A 1990 The early career of Viktor Amazaspovich Ambartsumian An interview Erevan October 1987 The Astronomy Quarterly Elsevier 7 3 143 176 Bibcode 1990AstQ 7 143M doi 10 1016 0364 9229 90 90019 W Parsamian 2008 p 89 a b c d e Shakhbazyan 2011 p 293 a b c d Brutian 2008 p 100 Shakhbazyan 2011 pp 76 78 a b Shakhbazyan 2011 p 41 Shakhbazyan 2011 p 46 50 Hacikyan Agop Jack Basmajian Gabriel Franchuk Edward S Ouzounian Nourhan 2005 The Heritage of Armenian Literature From the eighteenth century to modern times Detroit Wayne State University Press p 622 ISBN 9780814332214 Shakhbazyan 2011 p 78 Shakhbazyan 2011 p 85 a b c d e f g h i j Sobolev V V 16 October 2003 V A Ambarcumyan v Leningradskom universitete V A Ambartsumian at Leningrad University Journal of St Petersburg University in Russian 22 23 Archived from the original on 14 December 2019 date 10 11 1996 Գոհար Համբարձումյան ysu am in Armenian Yerevan State University Archived from the original on 3 December 2019 Shakhbazyan 2011 pp 96 97 Brutian 2008 p 101 a b c d e f g h i j k l m K 100 letiyu so dnya rozhdeniya akademika Ambarcumyana Viktora Amazaspovicha ras ru Russian Academy of Sciences 16 September 2008 Archived from the original on 7 December 2019 a b c Blaauw Adriaan 1997 V A Ambartsumian 18 September 1908 12 August 1996 Journal of Astrophysics and Astronomy 18 1 1 8 Bibcode 1997JApA 18 1B doi 10 1007 BF02714847 S2CID 121212500 a b Lynden Bell amp Gurzadyan 1998 p 24 a b c d e f Severnyi A B Sobolev V V 1969 Translated by W V Chumakov Viktor Amazaspovich Ambartsumyan on his 60th birthday Soviet Physics Uspekhi 11 5 776 777 doi 10 1070 PU1969v011n05ABEH003750 McCutcheon 1991 p 102 Wali Kameshwar C 1991 Chandra A Biography of S Chandrasekhar University of Chicago Press p 117 ISBN 9780226870557 a b c Weart Spencer 17 May 1977 Oral Histories S Chandrasekhar Session I American Institute of Physics a b c d Petrosian Artashes R Harutyunian Haik A Mickaelian Areg M June 1997 Victor Amazasp Ambartsumian Physics Today 50 6 106 doi 10 1063 1 881754 PDF Parsamian 2008 p 90 a b c d e Վիկտոր Համբարձումյան Viktor Hambardzumyan ysu am in Armenian Yerevan State University Archived from the original on 7 December 2019 Grigor Gurzadyan 1922 2002 aras am Armenian Astronomical Society Archived from the original on 20 December 2019 a b c d e f Brutian 2008 p 102 a b About Academy sci am National Academy of Sciences of the Republic of Armenia Archived from the original on 7 December 2019 a b Parsamian 2008 p 91 a b c d e Ֆիզիկայի ֆակուլտետ Faculty of Physics ysu am in Armenian Yerevan State University Archived from the original on 7 December 2019 a b Parsamian 2008 p 95 a b c d e f Lynden Bell amp Gurzadyan 1998 p 31 a b c Graham 1987 pp 422 324 a b c d e f g h History bao am Byurakan Astrophysical Observatory Archived from the original on 5 December 2019 a b Lynden Bell amp Gurzadyan 1998 p 27 a b c d e f g h i Victor Ambartsumian 1908 1996 Armenian Astronomical Society Archived from the original on 1 December 2019 a b c Martirosyan Marine Sarukhanyan Vahe 21 March 2018 The Byurakan Observatory Armenia s Scientific Crown Jewel Hetq Archived from the original on 1 December 2019 Khachikian E Ye 1979 On the Activity of the Nuclei of Galaxies In Westerlund Bengt E ed Stars and Star Systems Astrophysics and Space Science Library Vol 75 D Reidel Publishing Company p 109 doi 10 1007 978 94 009 9440 9 10 ISBN 978 94 009 9442 3 The history of objects with UV excess originated in the midsixties when on Ambartsumian s initiative Markarian began to make a successful survey of the sky with a view to detecting galaxies with anomalous spectra Markarian 196 7 in Byurakan using a 40 inch telescope of the Schmidt system provided with an objective prism of the same diameter Chronology at Astronomy at St Peteresburg University in Russian 1961 Nachala sozdavatsya Byurakanskaya stanciya 1993 V oktyabre noyabre T A Polyakova poslednej iz sotrudnikov Astronomicheskogo instituta provodit nablyudeniya na nashej Byurakanskoj stancii S teh por stanciya zakonservirovana Vucinich 2001 p 174 King Underwood Ani 22 August 1985 Filling the gaps in Einstein s theory New Scientist 1470 50 Symposium on the Philosophical Problems of Astronomy in the USSR Academy of Sciences Soviet Physics Uspekhi 16 4 579 1974 doi 10 1070 PU1974v016n04ABEH005362 These ideas which are being developed by the Byurakan school of Astronomers a b c d e f g Lynden Bell amp Gurzadyan 1998 p 28 a b c d Lynden Bell D 26 August 1996 Obituary Victor Ambartsumian The Independent Archived from the original on 2 December 2019 a b c Adalian Rouben Paul 2010 Hambartsumian Viktor Historical Dictionary of Armenia Lanham Maryland Scarecrow Press pp 353 354 ISBN 978 0 8108 7450 3 a b c Saxon Wolfgang 15 August 1996 Viktor A Ambartsumyan 87 Expert on Formation of Stars The New York Times p 22 a b Pisarzhevsky Oleg January 1960 Blue Galaxies The USSR 33 35 Brutian 2008 p 104 Lankford John ed 2011 1997 Ambartsumian Viktor Amazaspovich b 1908 History of Astronomy An Encyclopedia Routledge p 10 ISBN 9781136508349 a b Masevich Alla Genrikhovna 14 September 2019 Viktor Amazaspovich Ambartsumian Encyclopedia Britannica Archived from the original on 2 December 2019 a b c d Andrews A D 1997 Victor Ambartsumian 1908 1996 Irish Astronomical Journal 24 1 4 6 Bibcode 1997IrAJ 24 3G Keldysh M 1965 The progress and organization of science in the U S S R Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences 286 1407 448 Bibcode 1965RSPSA 286 441K doi 10 1098 rspa 1965 0156 S2CID 154749327 Ambartsumyan has done very interesting work on stellar associations and it is his conclusion that the process of star formation continues to this day a b c d e f g Israelian Garik 1997 Obituary Victor Amazaspovich Ambartsumian 1912 i e 1908 1996 Bulletin of the American Astronomical Society 29 4 1466 1467 Archived from the original on 11 September 2015 Ambartsumian V A 1947 Evolyuciya zvezd i astrofizika The Evolution of Stars and Astrophysics PDF in Russian Yerevan Armenian SSR Academy of Sciences Press Archived from the original PDF on 3 December 2019 a b c Lynden Bell amp Gurzadyan 1998 p 22 Lynden Bell amp Gurzadyan 1998 pp 28 29 Lynden Bell amp Gurzadyan 1998 p 29 Lynden Bell amp Gurzadyan 1998 p 30 31 Ambarzumjan V September 1929 Uber eine Frage der Eigenwerttheorie Zeitschrift fur Physik in German 53 9 10 690 695 Bibcode 1929ZPhy 53 690A doi 10 1007 BF01330827 S2CID 121562123 Eskitascioglu Esin Inan Acil Mehmet 2017 An inverse Sturm Liouville problem with a generalized symmetric potential PDF Electronic Journal of Differential Equations 41 1 ISSN 1072 6691 Archived from the original PDF on 10 May 2018 Anger Gottfried 1990 Inverse Problems in Differential Equations Akademie Verlag Berlin p 224 ISBN 9780306431647 Ozkan A S Keskin B 2012 Spectral problems for Sturm Liouville operator with boundary and jump conditions linearly dependent on the eigenparameter Inverse Problems in Science and Engineering 20 6 799 doi 10 1080 17415977 2011 652957 S2CID 122220549 a b Burbidge Geoffrey 1998 Introduction In Ambartsumian Rouben V ed A life in astrophysics Selected papers of Viktor A Ambartsumian New York Allerton Press pp vii viii ISBN 9780898640823 a b c Parsamian 2008 p 94 Parsamian 2008 p 440 a b Oganjanyan Sergey Silantiev Sergey 2017 Sergey Mergelyan Triumph and Tragedy Fourth International Conference on Computer Technology in Russia and in the Former Soviet Union SORUCOM IEEE Computer Society 8 12 doi 10 1109 sorucom 2017 00008 ISBN 978 1 5386 4741 7 S2CID 49643309 a b c Apoyan Grigor 14 August 2005 Esse o matematike i ne tolko o nem An Essay on a Mathematician and Not Only Almanac Lebed in Russian No 438 Archived from the original on 31 January 2020 Adalian Rouben Paul 2010 Historical Dictionary of Armenia Lanham Maryland Scarecrow Press p 605 ISBN 978 0 8108 7450 3 Bardakjian Kevork B 2000 A Reference Guide to Modern Armenian Literature 1500 1920 With an Introductory History Wayne State University Press p 615 ISBN 9780814327470 Ayvazian Hovhannes 2013 Հանրագիտարանը եւ մենք հայերս Encyclopedia and the Armenians Etchmiadzin in Armenian 69 3 140 141 Pecker Jean Claude 1988 Victor Ambartsumian and the I A U Astrophysics 29 1 9 14 Bibcode 1988Ap 29 409P doi 10 1007 BF01005853 S2CID 119494558 a b c d Blaauw Adriaan 2007 Ambartsumian Victor Amazaspovitch In Hockey Thomas ed Biographical Encyclopedia of Astronomers Volume I A L Springer pp 40 41 ISBN 9780387304007 a b c d e f g Kragh Helge 2012 The Universe the Cold War and Dialectical Materialism arXiv 1204 1625 physics hist ph Unity Urged in Study of Stars by Astronomers The Sydney Morning Herald 26 March 1963 Archived from the original on 3 December 2019 6 1 Past Officers and Directors of ICSU council science International Science Council Archived from the original on 6 December 2019 1968 1972 Victor A Ambartsumian USSR Lynden Bell amp Gurzadyan 1998 p 33 a b c d e f Kalloghlian A T October 1998 On the 90th birthday of Academician V A Ambartsumian founder of the journal Astrophysics at Symposium No 194 of the International Astronomical Union Astrophysics 41 4 325 327 Bibcode 1998Ap 41 325K doi 10 1007 BF02894657 S2CID 121474711 Ambartsumian V A 1968 Sovremennoe estestvoznanie i filosofiya Modern natural sciences and philosophy PDF Uspekhi Fizicheskikh Nauk in Russian 96 1 19 Archived from the original PDF on 3 December 2019 Ayrapetyan Albert 10 March 2009 Idei akademika Viktora Ambarcumyana i sovremennaya nauka Ideas of Academician Viktor Ambartsumian and Modern Science Relga in Russian Moscow 184 Archived from the original on 24 August 2014 avtor ateist i kommunist utverzhdaet Ambarcumyan V A Nauka o Vselennoj i religiya K kritike fideizme Nauka i religiya 1959 No 1 str 9 12 cited in Nedelko Vitaliy I Khundzhua Andrey G 2008 Nauka i religiya problemy vzaimootnoshenij PDF Pravoslavnoe osmyslenie tvoreniya mira i sovremennaya nauka in Russian Moscow Russian Orthodox Church 4 229 ISBN 978 5 902884 06 4 Archived from the original PDF on 3 December 2019 ՀԽՍՀ Գիտելիք ընկերություն haygirk nla am in Armenian National Library of Armenia Retrieved 7 December 2019 Corley Felix 1996 The Armenian Church Under the Soviet Regime Part 1 the Leadership of Kevork PDF Religion State amp Society Keston Institute 24 1 36 Գիտելիք Armenian Soviet Encyclopedia Volume III in Armenian 1977 p 81 ՀՍՍՀ ում Գիտելիք ընկերությունը ևս հիմնադրվել է 1947 ին Հիմնադրման օրից նախագահն է ակադեմիկոս Վ Համբարձումյանը Laitila Teuvo 2016 Russia Atheism Blasphemy State and Orthodox Christianity In Tomlins Steven Tomlins Steven eds The Atheist Bus Campaign Global Manifestations and Responses Leiden BRILL p 263 ISBN 9789004328532 Danielian Kh 1959 Հայկական ՍՍՌ քաղաքական և գիտական գիտելիքների տարածման ընկերությունը The Armenian Society for Spreading Political and Scientific Knowledge Patma Banasirakan Handes in Armenian N 2 3 2 3 391 Ընկերության աշխատանքներում զգայի տեղ է հատկացվում գիտա աթեիստական պրոպագանդային Shakhbazyan 2011 p 287 Parsamian 2008 p 344 Parsamian 2008 p 435 Hambardzumyan Viktor Sargsyan Sos Balayan Zori Babayan Simeon Grigoryan Vachagan 1990 Տ Տ Վազգեն Ա Ամենայն Հայոց Կաթողիկոս Etchmiadzin in Armenian 47 8 9 20 Vazgen I Palchyan Levon Karapet sci am Archived from the original on 15 December 2019 Rosino Leonida in Italian 1988 Encounters with Victor Ambartsumian one afternoon at the San Lazzaro Degli Armeni island at Venice Astrophysics 29 1 412 414 Bibcode 1988Ap 29 412R doi 10 1007 BF01005854 S2CID 120007462 Parsamian 2008 p 377 Graham 1987 pp 391 392 Hawkes Nick 2012 Evidence of God A Scientific Case for God Wipf and Stock p 29 ISBN 9781620321447 a b c Graham 1987 p 391 a b Teeter Mark H 1981 Philosophy In Teeter Mark H Sutter Eleanor B Ruble Balir A eds Soviet Research Institutes Project Volume III The Humanities United States International Communication Agency p 646 a b c Parsamian 2008 p 96 Graham 1987 p 392 Doel Ronald E 1992 Evaluating Soviet Lunar Science in Cold War America Osiris 7 254 Bibcode 1992Osir 7 238D doi 10 1086 368712 JSTOR 301774 S2CID 143320796 Alfavitnyj spisok narodnyh deputatov SSSR 26 marta 1989 26 dekabrya 1991 polnyj politika su Archived from the original on 25 December 2019 Szulc Tad 4 January 1971 Russians Invited to the Davis Trial The New York Times p 1 Soviet Scientists Call Missile Defense Plan By U S an Illusion The New York Times 10 April 1983 p 14 Goldberg Paul 1988 The Final Act The Dramatic Revealing Story of the Moscow Helsinki Watch Group New York Morrow pp 30 31 ISBN 9780688068592 72 Soviet Academicians Assail Sakharov on Prize The New York Times 26 October 1975 p 16 a b c Brutian 2008 p 105 Vahanyan Gvidon 1985 Վիկտոր Համբարձումյան Մեր ամենամեծ գանձը մայրենի լեզուն Garoun in Armenian Writers Union of Armenia 2 Archived from the original on 12 December 2019 Badalyan Melanya 15 November 2019 Հայոց լեզուն հայ ինքնության հայ էության ընդերքը Azg in Armenian Archived from the original on 12 December 2019 Վիկտոր Համբարձումյանը հայ եւ համաշխարհային գիտական մտքի պատմության մեջ թողեց մեծ ժառանգություն բայց իր վերջին խոսքիՙ Կտակի մեջ ժողովրդի մեծագույն առաքինությունը մայրենի լեզվի տիրապետումն ու դրա պահպանումն է համարում Hambardzumyan Viktor 1962 Հայ գրի և դպրության մեծ հիմնադիրը The Great Founder of Armenian Writing and Written Language Patma Banasirakan Handes in Armenian 3 3 3 16 Hambardzumyan Viktor 1969 Համազգային մեծ բանաստեղծը The Great National Poet Lraber Hasarakakan Gitutyunneri in Armenian 9 9 3 4 Hambardzumyan Viktor 1965 Մեծ եղեռնը Mets Yeghern Patma Banasirakan Handes in Armenian 1 1 19 20 Hambardzumyan Viktor 1965 Եղեռն և վերածնունդ Mets Yeghern and Revival Patma Banasirakan Handes in Armenian 2 2 41 54 Hambardzumyan Viktor 1975 Իմպերիալիզմը գենոցիդի հանցավորն է Imperialism the culprit of genocide Patma Banasirakan Handes in Armenian 2 2 67 72 Hambardzumyan Viktor A Sedrakian D M 1989 Հայկական ԽՍՀ գիտությունների ակադեմիայի նախագահությունում At the Presidium of the Armenian Academy of Sciences Patma Banasirakan Handes in Armenian 3 3 3 4 V Gurzadyan Hunger strike Nature 347 610 1990 1 a b Shogren Elizabeth 21 September 1990 Armenians Wage Hunger Strike in Regional Dispute Soviet Union Five threaten to starve themselves to death unless Moscow ends military rule in Azerbaijan enclave Los Angeles Times a b Schodolski Vincent J 19 September 1990 Armenians on Hunger Strike Chicago Tribune Archived from the original on 2 December 2019 Alt URL a b Nadler Gerald 18 September 1990 Famed Armenian scientist 82 on hunger strike upi com United Press International Archived from the original on 3 December 2019 a b c d e Lynden Bell amp Gurzadyan 1998 p 32 Shakhbazyan 2011 p 284 a b Hambardzumyan Viktor 1991 Հայաստանի գիտությունների ակադեմիայում In the Academy of Sciences of Armenia Patma Banasirakan Handes 1 3 6 Shakhbazyan 2011 pp 283 284 Վիկտոր Համբարձումյանը հաջողություն է նախանշում Aravot in Armenian 17 November 1995 Archived from the original on 3 December 2019 Shakhbazyan 2011 p 285 Parsamian 2008 p 195 Astrachan Anthony 24 September 1973 BOOKS Dogma in the Manger The New Yorker p 125 a b Staff correspondent February 1968 Picture of an Astrophysicist Soviet Life 2 56 57 a b Shakhbazyan 2011 pp 148 149 Brutian 2008 p 103 Lynden Bell amp Gurzadyan 1998 p 26 Shakhbazyan 2011 p 292 Cherry David 5 February 1992 Black Hole Theory Faces Challenge The New York Times p 22 Petrosian A R Gurzadyan V G 1996 Astronomy in Armenia Anticipations of a Second Wind Quarterly Journal of the Royal Astronomical Society 37 231 Bibcode 1996QJRAS 37 231P Ambartsumian one of the foremost astronomers of the 20th century Israelian Garik 16 September 2010 Award of the Viktor Ambartsumian International Prize for Astrophysics Instituto de Astrofisica de Canarias Archived from the original on 28 December 2019 Viktor Ambartsumian 1908 1996 was one of the most influential astronomers of the last century Einasto Jaan 2013 Dark Matter And Cosmic Web Story World Scientific p 141 ISBN 9789814551069 I visited in autumn 1977 Byurakan Observatory and discussed the idea with Viktor Ambartsumian the most influential astronomer of the USSR Sullivan Walter 26 October 1964 Space Signals Said To Hint Life Afar The New York Times The observatory is the headquarters of Viktor A Ambartsumian Russia s foremost astronomer Gregersen Erik ed 2009 The Universe A Historical Survey of Beliefs Theories and Laws Rosen Publishing Group p 163 ISBN 9781615300266 He was also the founder of the school of theoretical astrophysics in the Soviet Union Detre Centennial Conference Proceedings 2006 Hungarian Academy of Sciences p 22 This agreement obviously was a tribute of Victor Ambartsumian the president of the Armenian Academy of Sciences and an astronomer of very high international reputation Shabad Theodore 18 April 1979 Soviet Claims Joint Credit for Finding Jupiter s Ring The New York Times p 20 Viktor A Ambartsumyan a prominent and respected astronomer a b Members of the American Academy of Arts and Sciences 1780 2019 PDF amacad org p 13 Archived from the original PDF on 20 December 2019 Ambartsumian Viktor Amazaspovich 1908 1996 Election 1958 FHM Soviet Rule Has Bestowed Upon Science all the Authority of Which it Deprived Religion Time Vol 71 2 June 1958 p 23 reproduced in Congressional Record House Congressional Record U S Government Printing Office 9922 1958 The new Biurakan Observatory in Armenia has one of the world s largest telescopes and one of the world s finest libraries in the field The observatory s head Viktor Ambartsumian the first Soviet Scientist since World War II to become a foreign honorary member of the American Academy of Arts and Sciences a b Finney John W 11 June 1959 U S GROUP HONORS SOVIET SCIENTIST 2 Britons and German Also Elected as Associates by the National Academy The New York Times International Science Policy Panel on Science and Technology U S Congress House Committee on Science and Astronautics 277 278 27 January 1971 Science and Technology in Armenia Toward a Knowledge Based Economy Washington D C National Academies Press 2004 p 38 doi 10 17226 11107 ISBN 0 309 09278 7 The most famous twentieth century scientist in Armenia was Victor Ambartsumian Magakian T Yu 30 December 2003 95th anniversary of V A AMBARTSUMIAN PDF ArAS News Armenian Astronomical Society the greatest Armenian scientist and one of the greatest astronomers of the XX century Victor Ambartsumian Danielyan Eduard L in Armenian 2008 The Contribution of Academician Victor Hambartsumyan to the History of Armenian and World Cosmological Thought and Astronomy Lraber Hasarakakan Gitutyunneri 3 256 259 The names of Anania Shirakatsi 610 685 in the Middle Ages and Victor Hambartsumyan 1908 1996 in modern times sparkle in the arena of cosmology and astronomy Avagyan Sona 5 October 2010 Ոչ ոք չէր նկատել որ Շիրակացու 1400 ամյակն է Hetq in Armenian Archived from the original on 6 December 2019 Շիրակացին մեր ամենամեծ գիտնական է իր ժամանակաշրջանի համար Մենք իհարկե ունենք Վիկտոր Համբարձումյան որը շատ ավելի կարևոր դեր է խաղացել գիտության մեջ Չեմ ուզում այդպիսի համեմատություն անել բայց եթե հարաբերական նայենք ժամանակաշրջանի մեջ գուցե և Շիրականցին է համար 1 ին մեր մտածողը եղել հայ ժողովրդի ամբողջ պատմության մեջ այսօրվա մամուլի ասուլիսին ասաց Հայկական աստղագիտական ընկերության համանախագահ Արեգ Միքայելյանը a b Orders of the Republic of Armenia The Order of Motherland president am Archived from the original on 7 December 2019 Victor Hambardzumian 11 10 1994 a b Editorial Board 1997 Վիկտոր Համբարձումյան 1908 1996 Victor Hambartsoumian 1908 1996 Lraber Hasarakakan Gitutyunneri in Armenian 1 3 6 a b Banknotes out of Circulation 100 drams cba am Central Bank of Armenia Schmadel Lutz D 2007 1905 Ambartsumian Dictionary of Minor Planet Names Springer Berlin Heidelberg p 153 doi 10 1007 978 3 540 29925 7 1906 ISBN 978 3 540 00238 3 Երևան քաղաքի փողոցների պողոտաների նրբանցքների փակուղիների անցուղիների հրապարակների զբոսայգիների թաղամասերի սկսած1990 թվականից PDF yerevan am in Armenian Archived from the original PDF on 26 December 2019 Համբարձումյան Վիկտոր փողոց Վիկտոր Համբարձումյանի անվան պուրակ Երևանի քաղաքապետարանի ենթակայության դպրոցներ Yerevan municipal schools yerevan am in Armenian Yerevan Municipality Վիկտոր Համբարձումյանի անվան հ 12 դպրոցը հիմնադրվել է 1940թ Կրթօջախն աշխարհահռչակ աստղագետի անունով կոչվել է 1996թ List of Armenian Higher Education Institutions HEIs PDF erasmusplus am National Erasmus Office in Armenia April 2016 Archived from the original PDF on 28 February 2019 Vardenis Pedagogical Institute after Victor Hambardzumyan Monument to Victor Hambardzumyan unveiled in Yerevan panorama am 15 December 2009 Archived from the original on 5 December 2019 Հայաստանի Հանրապետության Գեղարքունիքի մարզի պատմության և մշակույթի անշարժ հուշարձանների պետական ցուցակը arlis am in Armenian Armenian Legal Information System 9 January 2003 ՀՈՒՇԱՐՁԱՆ ՎԻԿՏՈՐ ՀԱՄԲԱՐՁՈՒՄՅԱՆԻ 1978 թ Մշակույթի տան մոտ Հայաստանի ազգային հերոս ակադեմիկոս Վ Համբարձումյանի անվան միջազգային գիտական մրցանակ հիմնելու մասին president am in Armenian 16 April 2009 Archived from the original on 5 December 2019 Viktor Ambartsumian International Science Prize vaprize sci am National Academy of Sciences of the Republic of Armenia Archived from the original on 5 December 2019 New international prize commemorates Viktor Ambartsumian Astronomy amp Geophysics 50 6 6 6 December 2009 doi 10 1111 j 1468 4004 2009 50604 10 x JANSSEN PRIZE saf astronomie fr Societe astronomique de France Archived from the original on 20 December 2019 1956 Viktor Ambartsumian USSR a b c Redman R O 1960 Presidential address on the award of the Gold medal to prof V A Ambartsumian Quarterly Journal of the Royal Astronomical Society 1 23 25 Bibcode 1960QJRAS 1 23 PDF Mayall N U April 1960 Award of the Bruce Gold Medal to Prof V A Ambartsumian Publications of the Astronomical Society of the Pacific Astronomical Society of the Pacific 72 425 73 75 Bibcode 1960PASP 72 73M doi 10 1086 127484 Bolshaya zolotaya medal im M V Lomonosova ras ru in Russian Russian Academy of Sciences Archived from the original on 20 December 2019 1971 Ambarcumyan Viktor Amazaspovich za vydayushiesya dostizheniya v oblasti astronomii i astrofiziki Nagrazhdennye zolotoj medalyu imeni M V Lomonosova ras ru in Russian Russian Academy of Sciences Archived from the original on 20 December 2019 Hartkopf Werner 1992 Ambarzumjan Viktor Die Berliner Akademie der Wissenschaften Ihre Mitglieder und Preistrager 1700 1990 in German Walter de Gruyter p 6 ISBN 9783050068633 1971 Helmholtz Medaille der Akademie Cothenius Medal leopoldina org leopoldina org Archived from the original on 20 December 2019 1974 Viktor A Ambarcumjan 1908 1996 Erevan Astronomie Parsamian 2008 p 98 Honorary Members aas org American Astronomical Society Archived from the original on 2 December 2019 Viktor A Ambartsumian 1947 Viktor Amazaspovich Ambartsumian ras ac uk Archived from the original on 20 December 2019 Les membres du passe dont le nom commence par A academie sciences fr in French Archived from the original on 20 December 2019 Ambartsumian Victor Amazaspovitch 18 septembre 1908 a Tbilissi Georgie Russie 20 aout 1996 Elu correspondant le 22 decembre 1958 section d astronomie puis associe etranger le 12 juin 1978 Honorary Member Dr V A Ambartsumian rasc ca Archived from the original on 20 December 2019 Kolchinsky Edouard Hossfeld Uwe Levit Georgy S 30 August 2017 Russian scientists and the Royal Society of London 350 years of scientific collaboration Notes and Records The Royal Society Journal of the History of Science Royal Society 72 3 343 363 doi 10 1098 rsnr 2017 0001 24 04 1969 Viktor Amazaspovich Ambartsumian 1908 1996 astrophysicist Foreign Member Russian Delegates Miss First Talks The Age 19 March 1963 Archived from the original on 3 December 2019 Parsamian 2008 p 99 Ambartsumyan V A 1958 Theoretical Astrophysics Translated by J B Sykes London and New York Pergamon Press Payne Gaposchkin Cecilia May 1959 Theoretical Astrophysics V A Ambartsumyan Editor and J B Sykes Physics Today 12 5 56 doi 10 1063 1 3060822 Field George B June 1959 Reviewed Work Theoretical Astrophysics by V A Ambartsumyan J B Sykes American Scientist 47 2 176A 178A JSTOR 27827344 Redman R O 1958 Russian Astrophysics Nature 182 4635 548 549 Bibcode 1958Natur 182 548R doi 10 1038 182548a0 S2CID 4293821 Bibliography EditBooks on AmbartsumianShakhbazyan Yuri 2011 Ambarcumyan Etapy zhizni i nauchnye koncepcii Ambartsumian Stages of Life and Scientific Concepts PDF in Russian Moscow Molodaya Gvardiya ISBN 978 978 5 03437 0 Archived from the original PDF on 2 December 2019 Journal articlesLynden Bell D Gurzadyan V 1998 Victor Amazaspovich Ambartsumian 18 September 1908 12 August 1996 Biographical Memoirs of Fellows of the Royal Society Royal Society 44 22 34 doi 10 1098 rsbm 1998 0002 JSTOR 770228 Brutian Grigor in Armenian 2008 Վիկտոր Համբարձումեան Viktor Hambardzumyan Etchmiadzin in Armenian Mother See of Holy Etchmiadzin 64 10 99 105 Parsamian Elma S ed 2008 Victor Amabartsumian PDF Yerevan Gitutyun Press Armenian Academy of Sciences ISBN 978 5 8080 0742 0 McCutcheon Robert A 1991 The 1936 1937 Purge of Soviet Astronomers Slavic Review 50 1 100 117 doi 10 2307 2500602 JSTOR 2500602 S2CID 159916900 Editorial Board 2008 V A Ambarcumyan zhizn v nauke Astrofizika in Russian 51 3 343 362 translated in Editorial Board of Journal Astrofizika 2008 V A Ambartsumian A Life in Science Astrophysics 51 3 280 293 Bibcode 2008Ap 51 280E doi 10 1007 s10511 008 9016 6 S2CID 189843048 General booksGraham Loren 1987 1972 Science and Philosophy in the Soviet Union New York Columbia University Press Vucinich Alexander 2001 Einstein and Soviet Ideology Stanford University Press pp 173 176 ISBN 9780804742092 External links EditOral history interview transcript with Viktor Amazaspovich Ambartsumian on 2 October 1987 American Institute of Physics Niels Bohr Library amp Archives Ambartsumian bibliography at Sonoma State University Ambartsumian bibliography at ambartsumian ruFurther reading EditHarutyunian Haik Sedrakian David Kalloghlian Arsen Nikoghossian Arthur eds 2012 Ambartsumian s Legacy and Active Universe New York Springer Verlag ISBN 978 1 4614 0181 0 Retrieved from https en wikipedia org w index php title Viktor Ambartsumian amp oldid 1136189724, wikipedia, wiki, book, books, library,

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