The DECi-hertz Interferometer Gravitational wave Observatory (or DECIGO) is a proposed Japanese, space-based, gravitational wave observatory. The laser interferometric gravitational wave detector is so named because it is designed to be most sensitive in the frequency band between 0.1 and 10 Hz, filling in the gap between the sensitive bands of LIGO and LISA. Its precursor mission, B-DECIGO, is currently planned for launch in the 2030s, with DECIGO launching at some time afterward.
The design is similar to LISA, with four zero-drag satellite clusters (two colocated) in a triangular arrangement, but using a smaller separation of only 1000 km whose relative displacements are measured by a Fabry–Pérot Michelson interferometer.
The DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) is a proposed Japanese, space-based, gravitational wave observatory.[2][3] It was first described as a "short range space gravity wave antenna" (短距離型スペース重力波アンテナ, Tankyorigata Supēsu Jūryokuha Antena) in a presentation given by Seiji Kawamura in an October 2000 presentation given at the ICRR Satellite Symposium held by the National Astronomical Observatory of Japan.[4] The first mention of the observatory as "DECIGO" was in a presentation given by Naoki Seto, Kawamura, and Takashi Nakamura at a September 2001 meeting of the Physical Society of Japan at Okinawa International University.[5]
It was designed as a follow-up project to KAGRA by the Japanese Gravitational Wave Community (JGWC), and it is currently planned to be launched in 2027.[1] A 2008 paper in the Journal of Physics: Conference Series in 2008, authored by 135 scientists headed by Kawamura, went into significantly more detail, describing the basic initial design ideas.[2] It is designed to be most sensitive in the frequency band between 0.1 and 10 Hz, which better detects gravity waves in the gap between the sensitivity bands of LIGO and LISA.[6]
In a 2021 update, it was described as "four clusters of observatories" placed in heliocentric orbits, with each cluster consisting of an equilateral triangle with legs (or sides) of 1,000 kilometres (620 mi) and a zero-drag satellite at each point. Three of the clusters will be spaced equally around the Sun, and the other will be placed in the same location as one of the others. The placement is designed to facilitate "correlation signals for the detection of primordial gravitational waves". It is planned to launch an unspecified time following B-DECIGO, which has a projected launch sometime in the 2030s.[1]
B-DECIGOedit
B-DECIGO is a preliminary test of various technologies to be used in DECIGO. It will consist of a single cluster of observatories, each having arm lengths of 100 kilometres (62 mi), a laser wattage of 1 (rather than the 10 watts used for DECIGO), and a mirror mass of 30 kilograms (66 lb).[1] The target is an Earth orbit with an average altitude of 2,000 kilometres (1,200 mi).[7] As of 2021[update], it is planned for launch in the 2030s.[1]
^ abcdeSeiji Kawamura; et al. (22 February 2021). "Current status of space gravitational wave antenna DECIGO and B-DECIGO" (PDF). Progress of Theoretical and Experimental Physics. 2021 (5): 05A105. doi:10.1093/ptep/ptab019. Retrieved 1 February 2023.
^ abSeiji Kawamura; et al. (2008). "The Japanese space gravitational wave antenna - DECIGO". Journal of Physics: Conference Series. 122 (1): 012006. Bibcode:2008JPhCS.122a2006K. doi:10.1088/1742-6596/122/1/012006. hdl:11858/00-001M-0000-0013-144C-2.
^Seiji Kawamura; et al. (30 May 2006). The Japanese space gravitational wave antenna - DECIGO(PDF). Gravitational-Wave Advanced Detector Workshop. Elba, Italy. (PDF) from the original on 1 February 2023. Retrieved 1 February 2023.
^川村静児 (14 October 2000). 短距離型スペース重力波アンテナ [Short Range Space Gravity Wave Antenna] (PDF) (in Japanese). DECIGO. (PDF) from the original on 15 May 2021. Retrieved 1 February 2023.
^瀬戸直樹; 川村静児; 中村卓史 (22 September 2001). "Direct Measurement of the Acceleration of the Universe using 0.1Hz Band Laser Interferometer Gravitational Wave Antenna in Space" (PDF) (in Japanese). DECIGO. (PDF) from the original on 15 May 2021. Retrieved 1 February 2023.
^Masaki Ando; et al. (2009). "DECIGO: The Japanese space gravitational wave antenna" (PDF). Journal of Physics: Conference Series. 154 (1): 012040. Bibcode:2009JPhCS.154a2040S. doi:10.1088/1742-6596/154/1/012040. Retrieved 1 February 2023.
^Shuichi Sato; et al. (2017). "The status of DECIGO". Journal of Physics: Conference Series. 840 (1): 012010. Bibcode:2017JPhCS.840a2010S. doi:10.1088/1742-6596/840/1/012010. hdl:11858/00-001M-0000-002D-5B4E-D.
External linksedit
DECIGO home page (English)
April 16, 2024
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The DECi hertz Interferometer Gravitational wave Observatory or DECIGO is a proposed Japanese space based gravitational wave observatory The laser interferometric gravitational wave detector is so named because it is designed to be most sensitive in the frequency band between 0 1 and 10 Hz filling in the gap between the sensitive bands of LIGO and LISA Its precursor mission B DECIGO is currently planned for launch in the 2030s with DECIGO launching at some time afterward DECIGOMission typeGravitational waves observationOperatorISAS JAXAWebsitehttps decigo jp index E htmlStart of missionLaunch date2030s planned 1 Orbital parametersReference systemHeliocentricSemi major axis1 AUPeriod1 yearEpochplanned The design is similar to LISA with four zero drag satellite clusters two colocated in a triangular arrangement but using a smaller separation of only 1000 km whose relative displacements are measured by a Fabry Perot Michelson interferometer Contents 1 Description 2 B DECIGO 3 See also 4 References 5 External linksDescription editThe DECi hertz Interferometer Gravitational wave Observatory DECIGO is a proposed Japanese space based gravitational wave observatory 2 3 It was first described as a short range space gravity wave antenna 短距離型スペース重力波アンテナ Tankyorigata Supesu Juryokuha Antena in a presentation given by Seiji Kawamura in an October 2000 presentation given at the ICRR Satellite Symposium held by the National Astronomical Observatory of Japan 4 The first mention of the observatory as DECIGO was in a presentation given by Naoki Seto Kawamura and Takashi Nakamura at a September 2001 meeting of the Physical Society of Japan at Okinawa International University 5 It was designed as a follow up project to KAGRA by the Japanese Gravitational Wave Community JGWC and it is currently planned to be launched in 2027 1 A 2008 paper in the Journal of Physics Conference Series in 2008 authored by 135 scientists headed by Kawamura went into significantly more detail describing the basic initial design ideas 2 It is designed to be most sensitive in the frequency band between 0 1 and 10 Hz which better detects gravity waves in the gap between the sensitivity bands of LIGO and LISA 6 In a 2021 update it was described as four clusters of observatories placed in heliocentric orbits with each cluster consisting of an equilateral triangle with legs or sides of 1 000 kilometres 620 mi and a zero drag satellite at each point Three of the clusters will be spaced equally around the Sun and the other will be placed in the same location as one of the others The placement is designed to facilitate correlation signals for the detection of primordial gravitational waves It is planned to launch an unspecified time following B DECIGO which has a projected launch sometime in the 2030s 1 B DECIGO editB DECIGO is a preliminary test of various technologies to be used in DECIGO It will consist of a single cluster of observatories each having arm lengths of 100 kilometres 62 mi a laser wattage of 1 rather than the 10 watts used for DECIGO and a mirror mass of 30 kilograms 66 lb 1 The target is an Earth orbit with an average altitude of 2 000 kilometres 1 200 mi 7 As of 2021 update it is planned for launch in the 2030s 1 See also editLaser Interferometer Space Antenna LISA List of proposed space observatoriesReferences edit a b c d e Seiji Kawamura et al 22 February 2021 Current status of space gravitational wave antenna DECIGO and B DECIGO PDF Progress of Theoretical and Experimental Physics 2021 5 05A105 doi 10 1093 ptep ptab019 Retrieved 1 February 2023 a b Seiji Kawamura et al 2008 The Japanese space gravitational wave antenna DECIGO Journal of Physics Conference Series 122 1 012006 Bibcode 2008JPhCS 122a2006K doi 10 1088 1742 6596 122 1 012006 hdl 11858 00 001M 0000 0013 144C 2 Seiji Kawamura et al 30 May 2006 The Japanese space gravitational wave antenna DECIGO PDF Gravitational Wave Advanced Detector Workshop Elba Italy Archived PDF from the original on 1 February 2023 Retrieved 1 February 2023 川村静児 14 October 2000 短距離型スペース重力波アンテナ Short Range Space Gravity Wave Antenna PDF in Japanese DECIGO Archived PDF from the original on 15 May 2021 Retrieved 1 February 2023 瀬戸直樹 川村静児 中村卓史 22 September 2001 Direct Measurement of the Acceleration of the Universe using 0 1Hz Band Laser Interferometer Gravitational Wave Antenna in Space PDF in Japanese DECIGO Archived PDF from the original on 15 May 2021 Retrieved 1 February 2023 Masaki Ando et al 2009 DECIGO The Japanese space gravitational wave antenna PDF Journal of Physics Conference Series 154 1 012040 Bibcode 2009JPhCS 154a2040S doi 10 1088 1742 6596 154 1 012040 Retrieved 1 February 2023 Shuichi Sato et al 2017 The status of DECIGO Journal of Physics Conference Series 840 1 012010 Bibcode 2017JPhCS 840a2010S doi 10 1088 1742 6596 840 1 012010 hdl 11858 00 001M 0000 002D 5B4E D External links editDECIGO home page English Retrieved from https en wikipedia org w index php title Deci hertz Interferometer Gravitational wave Observatory amp oldid 1193722265, wikipedia, wiki, book, books, library,
