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Current status of space gravitational wave antenna DECIGO and B-DECIGO
Author(s) -
Seiji Kawamura,
Masaki Ando,
Naoki Seto,
Shuichi Sato,
Mitsuru Musha,
Isao Kawano,
Junichi Yokoyama,
Takahiro Tanaka,
Kunihito Ioka,
T. Akutsu,
Takeshi Takashima,
K. Agatsuma,
A. Araya,
N. Aritomi,
Hideki Asada,
Takeshi Chiba,
S. Eguchi,
Motohiro Enoki,
Masa-Katsu Fujimoto,
Ryuichi Fujita,
Toshifumi Futamase,
Tomohiro Harada,
K. Hayama,
Y. Himemoto,
Takashi Hiramatsu,
Feng-Lei Hong,
Mizuhiko Hosokawa,
Kiyotomo Ichiki,
Satoshi Ikari,
Hideki Ishihara,
Tomohiro Ishikawa,
Y. Itoh,
Takahiro Ito,
Shoki Iwaguchi,
Kiwamu Izumi,
Nobuyuki Kanda,
Shinya Kanemura,
Fumiko Kawazoe,
S. Kobayashi,
Kazunori Kohri,
Yasufumi Kojima,
K. Kokeyama,
Kei Kotake,
Sachiko Kuroyanagi,
Kei-ichi Maeda,
Shuhei Matsushita,
Yuta Michimura,
Taigen Morimoto,
Shinji Mukohyama,
Koji Nagano,
Shigeo Nagano,
Takeo Naito,
K. Nakamura,
Takashi Nakamura,
Hiroyuki Nakano,
Ken-ichi Nakao,
Shinichi Nakasuka,
Yoshinori Nakayama,
K. Nakazawa,
A. Nishizawa,
Masashi Ohkawa,
Ken-ichi Oohara,
Norichika Sago,
Motoyuki Saijo,
Masaaki Sakagami,
Shin-ichiro Sakai,
Takashi Sato,
Masaru Shibata,
H. Shinkai,
A. Shoda,
K. Somiya,
Hajime Sotani,
Ryutaro Takahashi,
Hirotaka Takahashi,
Takamori Akiteru,
Keisuke Taniguchi,
Atsushi Taruya,
Kimio Tsubono,
Shinji Tsujikawa,
Akitoshi Ueda,
Ken-ichi Ueda,
Izumi Watanabe,
Kent Yagi,
Rika Yamada,
Shuichiro Yokoyama,
ChulMoon Yoo,
ZongHong Zhu
Publication year - 2021
Publication title -
progress of theoretical and experimental physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 53
ISSN - 2050-3911
DOI - 10.1093/ptep/ptab019
Subject(s) - physics , gravitational wave , astronomy , observatory , astrophysics
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.

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