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Remo Ruffini

January 01, 1970

For the Italian businessman, see Remo Ruffini (businessman).

Remo Ruffini (born May 17, 1942, La Brigue, Alpes-Maritimes, at that time, Briga Marittima, Italy). He is the Director of ICRANet, International Centre for Relativistic Astrophysics Network and one of the founders of the International Centre for Relativistic Astrophysics (ICRA). Ruffini initiated the International Relativistic Astrophysics PhD (IRAP PhD), a common graduate school program of several universities and research institutes for the education of theoretical astrophysicists. He is the Director of the Erasmus Mundus IRAP PhD program (IRAP Ph D Erasmus Mundus). He has been Professor of Theoretical Physics at the University of Rome "Sapienza" from 1978 to 2012.

Remo Ruffini
Ruffini, Remo
Born (1942-05-17) May 17, 1942 (age 81)
La Brigue, France
Known for
SpouseAnna Imponente
Children1
Scientific career
FieldsAstrophysics
Doctoral studentsDaniela Calzetti

Biography edit

After obtaining his degree in 1966 in Rome, he was a post-doctoral fellow at the Mainz Academy of Sciences working with Pascual Jordan, in West Germany. Then, he was a post-doctoral fellow with John Wheeler and Member of the Institute for Advanced Study in Princeton and later became an instructor and assistant professor at Princeton University. In 1975, he was a visiting professor at the Universities of Kyoto (Japan) and of Western Australia, Perth. In the years 1975–78, he worked with NASA, being a member of the task force on the scientific use of space stations. In 1976 he became professor of theoretical physics at the University of Catania and in 1978 he was appointed a professor at the University "Sapienza". In 1985, he was elected president of the International Center for Relativistic Astrophysics (ICRA). In 1984 he was a cofounder, with Abdus Salam, of the Marcel Grossmann Meetings.[1] In 1987, he became co-chairman of the Italian-Korean Meetings on Relativistic Astrophysics. In the years 1989–93, he was President of the Scientific Committee of the Italian Space Agency. He is the editor of a variety of scientific journals. He is married to Anna Imponente and has a son, Iacopo.

His theoretical work led to the concept of boson stars.[2] His classic article with John Wheeler[3] popularized the astrophysical concept of Black Hole.[4] With Demetrios Christodoulou he has given the formula for a Kerr-Newmann Black Hole endowed of charge, mass and angular momentum.[5] His theoretical work led to the identification of the first Black Holes in the Milky Way Galaxy.

Together with his student C. Rhoades,[6] he established the absolute upper limit to the mass of neutron stars. With his student Robert Leach,[7] he used such an upper limit for fixing the paradigm which enabled the identification of the first Black Hole in the Milky Way Galaxy, Cygnus X1, using the splendid data of the Uhuru satellite by Riccardo Giacconi and his group.[8][9]

For these works, Ruffini won the A. Cressy Morrison Award of the New York Academy of Sciences in 1972.[10]

With his students Calzetti, Giavalisco, Song and Taraglio, Ruffini developed the role of fractal structures in cosmology.[11][12]

Together with his collaborator Thibault Damour,[13] Ruffini suggested the applicability of the Heisenberg-Euler-Schwinger process of pair creation in black hole physics and identified the dyadosphere where these processes take place. Gamma ray bursts seem to give the observational evidence of such pair creation process in astrophysics, prior to the observation of such phenomenon in Earth based experiments and represent the first evidence of the energy extraction process from Black Holes (the blackholic energy).[14]

Bird's-eye view of our black-hole universe edit

 
The first-ever picture of a black hole, painted for Physics Today (January 1971) under the supervision of Remo Ruffini.[15]

An external observer would see our black-hole universe as a sphere of space that is being sucked into its central wormhole:

The drain hole sucking water toward it is equivalent to the singularity at the center of a black hole sucking space toward it.

—Sen, Paul. Einstein's Fridge: How the Difference Between Hot and Cold Explains the Universe Simon and Schuster, 2022, p. 228

Consequently, our black-hole universe shrinks ever faster, spins ever faster, and has an ever deeper funnel-shaped vortex at its north pole:[16]

 

To us, falling towards the central singularity, our shrinking black-hole universe seems to be expanding:

Now let us consider an astronaut explorer who goes to visit a black hole and falls in. According to her own proper time, the explorer can soon arrive in the vicinity of the horizon. Any light emitted at rs in the outward radial direction as she falls in stays at the horizon, according to outer observers, but travels at c relative to the astronaut. Therefore, in the astronaut's rest frame the horizon moves outwards at c.

—Steane, Andrew M. Relativity Made Relatively Easy OUP, 2012, pp. 388–89

Books edit

He is co-author of 21 books, including:

  • R. Giacconi and R. Ruffini, Physics and Astrophysics of Neutron Stars and Black Holes, LXXV E. Fermi Summer School, SIF and North Holland (1978); also translated into Russian
  • R. Giacconi and R. Ruffini, Physics and Astrophysics of Neutron Stars and Black Holes 2nd edition, Cambridge Scientific Publishers, Cambridge (2009)
  • R. Gursky and R. Ruffini, Neutron Stars, Black Holes and Binary X Ray Sources, H. Reidel (1975)
  • H. Ohanian and R. Ruffini. Gravitation and Spacetime, W.W. Norton (1994); translated into Italian (Bologna: Zanichelli, 1997), Chinese (China Science Publishing, 2007) and Korean (Seoul: Shin Won, 2001)
  • Bardeen, et al., Black Holes, Gordon & Breach (1973)
  • M. Rees, J.A. Wheeler and R. Ruffini, Black Holes, Gravitational Waves and Cosmology, Gordon & Breach (1974)
  • H. Sato and R. Ruffini, Black Holes, Tokyo (1976)
  • L.Z. Fang and R. Ruffini, Basic Concepts in Relativistic Astrophysics, Beijing: Science Press (1981)
  • F. Melchiorri and R. Ruffini, Gamow Cosmology, North Holland Pub. Co., (1986)

Awards edit

See also edit

References edit

  1. ^ Alex Gaina, MARCEL GROSSMANN MEETING-AN IMPORTANT EVENT IN GRAVITATION AND ASTROPHYSICS [1]
  2. ^ R. Ruffini & S. Bonazzola (1969). "Systems of Self-Gravitating Particles in General Relativity and the Concept of an Equation of State". Physical Review. 187 (5): 1767–1783. Bibcode:1969PhRv..187.1767R. doi:10.1103/PhysRev.187.1767. hdl:2060/19690028071.
  3. ^ R. Ruffini & J.A. Wheeler (1971). "Introducing the Black Hole". Physics Today. 24 (1): 30–41. Bibcode:1971PhT....24a..30R. doi:10.1063/1.3022513.
  4. ^ Naming of black hole.
  5. ^ D. Christodoulou; R. Ruffini (1971). "Reversible Transformations of a Charged Black Hole". Physical Review D. 4 (12): 3552–3555. Bibcode:1971PhRvD...4.3552C. doi:10.1103/PhysRevD.4.3552.
  6. ^ C. Rhoades & R. Ruffini (1974). "Maximum Mass of a Neutron Star". Physical Review Letters. 32 (6): 324. Bibcode:1974PhRvL..32..324R. doi:10.1103/PhysRevLett.32.324.
  7. ^ R. Leach & R. Ruffini (1973). "On the Masses of X-Ray Sources". Astrophysical Journal Letters. 180: L15. Bibcode:1973ApJ...180L..15L. doi:10.1086/181143.
  8. ^ R. Giacconi (2005). "An Education in Astronomy". Annual Review of Astronomy & Astrophysics. 43 (1): 1–30. Bibcode:2005ARA&A..43....1G. doi:10.1146/annurev.astro.43.090303.091253.
  9. ^ R. Giacconi (2003). "Nobel Lecture: The dawn of x-ray astronomy". Reviews of Modern Physics. 75 (3): 995–1010. Bibcode:2003RvMP...75..995G. doi:10.1103/RevModPhys.75.995.
  10. ^ Ruffini, Remo (1973). "Neutron Stars and Black Holes in Our Galaxy*". Transactions of the New York Academy of Sciences. 35 (3 Series II): 196–226. doi:10.1111/j.2164-0947.1973.tb01960.x. ISSN 2164-0947.
  11. ^ D. Calzetti; M. Giavalisco; R. Ruffini (1988). "The normalization of the correlation functions for extragalactic structures". Astronomy and Astrophysics. 198 (1–2): 1. Bibcode:1988A&A...198....1C.
  12. ^ R. Ruffini; D.J. Song; S. Taraglio (1988). "The 'ino' mass and the cellular large-scale structure of the universe". Astronomy and Astrophysics. 190 (1–2): 1. Bibcode:1988A&A...190....1R.
  13. ^ T. Damour & R. Ruffini (1975). "Quantum Electrodynamical Effects in Kerr-Newmann Geometries". Physical Review Letters. 35 (7): 463. Bibcode:1975PhRvL..35..463D. doi:10.1103/PhysRevLett.35.463.
  14. ^ R. Ruffini; et al. (2008). "Gamma Ray Bursts". Proceedings XI Marcel Grossmann Meeting. World Scientific.
  15. ^ Artist's rendition of a black hole (1971)
  16. ^ Battersby, Stephen. Big Bang glow hints at funnel-shaped Universe New Scientist, 2004 04 15
  17. ^ "Gravity Research Foundation". Gravity Research Foundation. Retrieved 2020-09-03.

External links edit

  • (in English) web page Remo Ruffini
  • (Publications)
  • ICRANet
  • (IRAP).
  • List of publications

January 01, 1970
remo, ruffini, italian, businessman, businessman, born, 1942, brigue, alpes, maritimes, that, time, briga, marittima, italy, director, icranet, international, centre, relativistic, astrophysics, network, founders, international, centre, relativistic, astrophys. For the Italian businessman see Remo Ruffini businessman Remo Ruffini born May 17 1942 La Brigue Alpes Maritimes at that time Briga Marittima Italy He is the Director of ICRANet International Centre for Relativistic Astrophysics Network and one of the founders of the International Centre for Relativistic Astrophysics ICRA Ruffini initiated the International Relativistic Astrophysics PhD IRAP PhD a common graduate school program of several universities and research institutes for the education of theoretical astrophysicists He is the Director of the Erasmus Mundus IRAP PhD program IRAP Ph D Erasmus Mundus He has been Professor of Theoretical Physics at the University of Rome Sapienza from 1978 to 2012 Remo RuffiniRuffini RemoBorn 1942 05 17 May 17 1942 age 81 La Brigue FranceKnown forCo Founder amp Director of International Center for Relativistic Astrophysics and ICRANetBlack Hole IdentificationSpouseAnna ImponenteChildren1Scientific careerFieldsAstrophysicsDoctoral studentsDaniela Calzetti Contents 1 Biography 2 Bird s eye view of our black hole universe 3 Books 4 Awards 5 See also 6 References 7 External linksBiography editAfter obtaining his degree in 1966 in Rome he was a post doctoral fellow at the Mainz Academy of Sciences working with Pascual Jordan in West Germany Then he was a post doctoral fellow with John Wheeler and Member of the Institute for Advanced Study in Princeton and later became an instructor and assistant professor at Princeton University In 1975 he was a visiting professor at the Universities of Kyoto Japan and of Western Australia Perth In the years 1975 78 he worked with NASA being a member of the task force on the scientific use of space stations In 1976 he became professor of theoretical physics at the University of Catania and in 1978 he was appointed a professor at the University Sapienza In 1985 he was elected president of the International Center for Relativistic Astrophysics ICRA In 1984 he was a cofounder with Abdus Salam of the Marcel Grossmann Meetings 1 In 1987 he became co chairman of the Italian Korean Meetings on Relativistic Astrophysics In the years 1989 93 he was President of the Scientific Committee of the Italian Space Agency He is the editor of a variety of scientific journals He is married to Anna Imponente and has a son Iacopo His theoretical work led to the concept of boson stars 2 His classic article with John Wheeler 3 popularized the astrophysical concept of Black Hole 4 With Demetrios Christodoulou he has given the formula for a Kerr Newmann Black Hole endowed of charge mass and angular momentum 5 His theoretical work led to the identification of the first Black Holes in the Milky Way Galaxy Together with his student C Rhoades 6 he established the absolute upper limit to the mass of neutron stars With his student Robert Leach 7 he used such an upper limit for fixing the paradigm which enabled the identification of the first Black Hole in the Milky Way Galaxy Cygnus X1 using the splendid data of the Uhuru satellite by Riccardo Giacconi and his group 8 9 For these works Ruffini won the A Cressy Morrison Award of the New York Academy of Sciences in 1972 10 With his students Calzetti Giavalisco Song and Taraglio Ruffini developed the role of fractal structures in cosmology 11 12 Together with his collaborator Thibault Damour 13 Ruffini suggested the applicability of the Heisenberg Euler Schwinger process of pair creation in black hole physics and identified the dyadosphere where these processes take place Gamma ray bursts seem to give the observational evidence of such pair creation process in astrophysics prior to the observation of such phenomenon in Earth based experiments and represent the first evidence of the energy extraction process from Black Holes the blackholic energy 14 Bird s eye view of our black hole universe edit nbsp The first ever picture of a black hole painted for Physics Today January 1971 under the supervision of Remo Ruffini 15 An external observer would see our black hole universe as a sphere of space that is being sucked into its central wormhole The drain hole sucking water toward it is equivalent to the singularity at the center of a black hole sucking space toward it Sen Paul Einstein s Fridge How the Difference Between Hot and Cold Explains the Universe Simon and Schuster 2022 p 228 Consequently our black hole universe shrinks ever faster spins ever faster and has an ever deeper funnel shaped vortex at its north pole 16 nbsp To us falling towards the central singularity our shrinking black hole universe seems to be expanding Now let us consider an astronaut explorer who goes to visit a black hole and falls in According to her own proper time the explorer can soon arrive in the vicinity of the horizon Any light emitted at rs in the outward radial direction as she falls in stays at the horizon according to outer observers but travels at c relative to the astronaut Therefore in the astronaut s rest frame the horizon moves outwards at c Steane Andrew M Relativity Made Relatively Easy OUP 2012 pp 388 89Books editHe is co author of 21 books including R Giacconi and R Ruffini Physics and Astrophysics of Neutron Stars and Black Holes LXXV E Fermi Summer School SIF and North Holland 1978 also translated into Russian R Giacconi and R Ruffini Physics and Astrophysics of Neutron Stars and Black Holes 2nd edition Cambridge Scientific Publishers Cambridge 2009 R Gursky and R Ruffini Neutron Stars Black Holes and Binary X Ray Sources H Reidel 1975 H Ohanian and R Ruffini Gravitation and Spacetime W W Norton 1994 translated into Italian Bologna Zanichelli 1997 Chinese China Science Publishing 2007 and Korean Seoul Shin Won 2001 Bardeen et al Black Holes Gordon amp Breach 1973 M Rees J A Wheeler and R Ruffini Black Holes Gravitational Waves and Cosmology Gordon amp Breach 1974 H Sato and R Ruffini Black Holes Tokyo 1976 L Z Fang and R Ruffini Basic Concepts in Relativistic Astrophysics Beijing Science Press 1981 F Melchiorri and R Ruffini Gamow Cosmology North Holland Pub Co 1986 Awards editA Cressy Morrison Award from the New York Academy of Sciences 1972 Alfred P Sloan Fellow Foundation 1974 Space Scientist of the Year 1992 Gravity Research Foundation Award 1970 1971 2019 17 See also editErgosphere Schrodinger Newton equationReferences edit Alex Gaina MARCEL GROSSMANN MEETING AN IMPORTANT EVENT IN GRAVITATION AND ASTROPHYSICS 1 R Ruffini amp S Bonazzola 1969 Systems of Self Gravitating Particles in General Relativity and the Concept of an Equation of State Physical Review 187 5 1767 1783 Bibcode 1969PhRv 187 1767R doi 10 1103 PhysRev 187 1767 hdl 2060 19690028071 R Ruffini amp J A Wheeler 1971 Introducing the Black Hole Physics Today 24 1 30 41 Bibcode 1971PhT 24a 30R doi 10 1063 1 3022513 Naming of black hole D Christodoulou R Ruffini 1971 Reversible Transformations of a Charged Black Hole Physical Review D 4 12 3552 3555 Bibcode 1971PhRvD 4 3552C doi 10 1103 PhysRevD 4 3552 C Rhoades amp R Ruffini 1974 Maximum Mass of a Neutron Star Physical Review Letters 32 6 324 Bibcode 1974PhRvL 32 324R doi 10 1103 PhysRevLett 32 324 R Leach amp R Ruffini 1973 On the Masses of X Ray Sources Astrophysical Journal Letters 180 L15 Bibcode 1973ApJ 180L 15L doi 10 1086 181143 R Giacconi 2005 An Education in Astronomy Annual Review of Astronomy amp Astrophysics 43 1 1 30 Bibcode 2005ARA amp A 43 1G doi 10 1146 annurev astro 43 090303 091253 R Giacconi 2003 Nobel Lecture The dawn of x ray astronomy Reviews of Modern Physics 75 3 995 1010 Bibcode 2003RvMP 75 995G doi 10 1103 RevModPhys 75 995 Ruffini Remo 1973 Neutron Stars and Black Holes in Our Galaxy Transactions of the New York Academy of Sciences 35 3 Series II 196 226 doi 10 1111 j 2164 0947 1973 tb01960 x ISSN 2164 0947 D Calzetti M Giavalisco R Ruffini 1988 The normalization of the correlation functions for extragalactic structures Astronomy and Astrophysics 198 1 2 1 Bibcode 1988A amp A 198 1C R Ruffini D J Song S Taraglio 1988 The ino mass and the cellular large scale structure of the universe Astronomy and Astrophysics 190 1 2 1 Bibcode 1988A amp A 190 1R T Damour amp R Ruffini 1975 Quantum Electrodynamical Effects in Kerr Newmann Geometries Physical Review Letters 35 7 463 Bibcode 1975PhRvL 35 463D doi 10 1103 PhysRevLett 35 463 R Ruffini et al 2008 Gamma Ray Bursts Proceedings XI Marcel Grossmann Meeting World Scientific Artist s rendition of a black hole 1971 Battersby Stephen Big Bang glow hints at funnel shaped Universe New Scientist 2004 04 15 Gravity Research Foundation Gravity Research Foundation Retrieved 2020 09 03 External links edit in English web page Remo Ruffini Publications ICRANet IRAP List of publications Retrieved from https en wikipedia org w index php title Remo Ruffini amp oldid 1214110496, wikipedia, wiki, book, books, library,

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