Current status of space gravitational wave antenna DECIGO and B-DECIGO
Abstract
Deci-hertz Interferometer Gravitational Wave Observatory (DECIGO) is the 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 be 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 the heliocentric orbit. Each cluster consists of three spacecraft, which form three Fabry-Perot Michelson interferometers with an arm length of 1,000 km. Three clusters of DECIGO will be placed far from each other, and the fourth cluster will be placed in the same position as one of the three clusters to obtain the correlation signals for the detection of the primordial gravitational waves. We plan to launch B-DECIGO, which is a scientific pathfinder of DECIGO, before DECIGO in the 2030s to demonstrate the technologies required for DECIGO, as well as to obtain fruitful scientific results to further expand the multi-messenger astronomy.
Keywords
Cite
@article{arxiv.2006.13545,
title = {Current status of space gravitational wave antenna DECIGO and B-DECIGO},
author = {Seiji Kawamura and Masaki Ando and Naoki Seto and Shuichi Sato and Mitsuru Musha and Isao Kawano and Jun'ichi Yokoyama and Takahiro Tanaka and Kunihito Ioka and Tomotada Akutsu and Takeshi Takashima and Kazuhiro Agatsuma and Akito Araya and Naoki Aritomi and Hideki Asada and Takeshi Chiba and Satoshi Eguchi and Motohiro Enoki and Masa-Katsu Fujimoto and Ryuichi Fujita and Toshifumi Futamase and Tomohiro Harada and Kazuhiro Hayama and Yoshiaki Himemoto and Takashi Hiramatsu and Feng-Lei Hong and Mizuhiko Hosokawa and Kiyotomo Ichiki and Satoshi Ikari and Hideki Ishihara and Tomohiro Ishikawa and Yousuke Itoh and Takahiro Ito and Shoki Iwaguchi and Kiwamu Izumi and Nobuyuki Kanda and Shinya Kanemura and Fumiko Kawazoe and Shiho Kobayashi and Kazunori Kohri and Yasufumi Kojima and Keiko Kokeyama and Kei Kotake and Sachiko Kuroyanagi and Kei-ichi Maeda and Shuhei Matsushita and Yuta Michimura and Taigen Morimoto and Shinji Mukohyama and Koji Nagano and Shigeo Nagano and Takeo Naito and Kouji Nakamura and Takashi Nakamura and Hiroyuki Nakano and Kenichi Nakao and Shinichi Nakasuka and Yoshinori Nakayama and Kazuhiro Nakazawa and Atsushi Nishizawa and Masashi Ohkawa and Kenichi Oohara and Norichika Sago and Motoyuki Saijo and Masaaki Sakagami and Shin-ichiro Sakai and Takashi Sato and Masaru Shibata and Hisaaki Shinkai and Ayaka Shoda and Kentaro Somiya and Hajime Sotani and Ryutaro Takahashi and Hirotaka Takahashi and Takamori Akiteru and Keisuke Taniguchi and Atsushi Taruya and Kimio Tsubono and Shinji Tsujikawa and Akitoshi Ueda and Ken-ichi Ueda and Izumi Watanabe and Kent Yagi and Rika Yamada and Shuichiro Yokoyama and Chul-Moon Yoo and Zong-Hong Zhu},
journal= {arXiv preprint arXiv:2006.13545},
year = {2020}
}
Comments
10 pages, 3 figures