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Current status of space gravitational wave antenna DECIGO and B-DECIGO.

Current status of space gravitational wave antenna DECIGO and B-DECIGO.

Authors :
Kawamura, Seiji
Ando, Masaki
Seto, Naoki
Sato, Shuichi
Musha, Mitsuru
Kawano, Isao
Yokoyama, Jun'ichi
Tanaka, Takahiro
Ioka, Kunihito
Akutsu, Tomotada
Takashima, Takeshi
Agatsuma, Kazuhiro
Araya, Akito
Aritomi, Naoki
Asada, Hideki
Chiba, Takeshi
Eguchi, Satoshi
Enoki, Motohiro
Fujimoto, Masa-Katsu
Fujita, Ryuichi
Source :
Progress of Theoretical & Experimental Physics: PTEP; May2021, Vol. 2021 Issue 5, p1-11, 11p
Publication Year :
2021

Abstract

The Deci-hertz Interferometer Gravitational Wave Observatory (DECIGO) is a future Japanese space mission with a frequency band of 0.1 Hz to 10 Hz. DECIGO aims at the detection of primordial gravitational waves, which could have been produced during the inflationary period right after the birth of the Universe. There are many other scientific objectives of DECIGO, including the direct measurement of the acceleration of the expansion of the Universe, and reliable and accurate predictions of the timing and locations of neutron star/black hole binary coalescences. DECIGO consists of four clusters of observatories placed in heliocentric orbit. Each cluster consists of three spacecraft, which form three Fabry–Pérot Michelson interferometers with an arm length of 1000 km. Three DECIGO clusters will be placed far from each other, and the fourth will be placed in the same position as one of the other three to obtain correlation signals for the detection of primordial gravitational waves. We plan to launch B-DECIGO, which is a scientific pathfinder for DECIGO, before DECIGO in the 2030s to demonstrate the technologies required for DECIGO, as well as to obtain fruitful scientific results to further expand multi-messenger astronomy. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20503911
Volume :
2021
Issue :
5
Database :
Complementary Index
Journal :
Progress of Theoretical & Experimental Physics: PTEP
Publication Type :
Academic Journal
Accession number :
150872326
Full Text :
https://doi.org/10.1093/ptep/ptab019