Space gravitational-wave antennas DECIGO and B-DECIGO
Authors: Kawamura Seiji , Nakamura Takashi , Ando Masaki , Seto Naoki , Akutsu Tomotada , Funaki Ikkoh , Ioka Kunihito , Kanda Nobuyuki , Kawano Isao , Musha Mitsuru , Nakazawa Kazuhiro , Sato Shuichi , Takashima Takeshi , Tanaka Takahiro , Tsubono Kimio , Yokoyama Jun'ichi , Agatsuma Kazuhiro , Aoyanagi Koh-suke , Arai Koji , Araya Akito , Aritomi Naoki , Asada Hideki , Aso Yoichi , Chen Dan , Chiba Takeshi , Ebisuzaki Toshikazu , Eguchi Satoshi , Ejiri Yumiko , Enoki Motohiro , Eriguchi Yoshiharu , Fujimoto Masa-Katsu , Fujita Ryuichi , Fukushima Mitsuhiro , Futamase Toshifumi , Gondo Rina , Harada Tomohiro , Hashimoto Tatsuaki , Hayama Kazuhiro , Hikida Wataru , Himemoto Yoshiaki , Hirabayashi Hisashi , Hiramatsu Takashi , Hong Feng-Lei , Horisawa Hideyuki , Hosokawa Mizuhiko , Ichiki Kiyotomo , Ikegami Takeshi , Inoue Kaiki T. , Ishihara Hideki , Ishikawa Takehiko , Ishizaki Hideharu , Ito Hiroyuki , Itoh Yousuke , Izumi Kiwamu , Kanemura Shinya , Kawashima Nobuki , Kawazoe Fumiko , Kishimoto Naoko , Kiuchi Kenta , Kobayashi Shiho , Kohri Kazunori , Koizumi Hiroyuki , Kojima Yasufumi , Kokeyama Keiko , Kokuyama Wataru , Kotake Kei , Kozai Yoshihide , Kunimori Hiroo , Kuninaka Hitoshi , Kuroda Kazuaki , Kuroyanagi Sachiko , Maeda Kei-ichi , Matsuhara Hideo , Matsumoto Nobuyuki , Michimura Yuta , Miyakawa Osamu , Miyamoto Umpei , Miyoki Shinji , Morimoto Mutsuko Y. , Morisawa Toshiyuki , Moriwaki Shigenori , Mukohyama Shinji , Nagano Shigeo , Nakamura Kouji , Nakano Hiroyuki , Nakao Kenichi , Nakasuka Shinichi , Nakayama Yoshinori , Nishida Erina , Nishizawa Atsushi , Niwa Yoshito , Noumi Taiga , Obuchi Yoshiyuki , Ohishi Naoko , Ohkawa Masashi , Okada Kenshi , Okada Norio , Okutomi Koki , Oohara Kenichi , Sago Norichika , Saijo Motoyuki , Saito Ryo , Sakagami Masaaki , Sakai Shin-ichiro , Sakata Shihori , Sasaki Misao , Sato Takashi , Shibata Masaru , Shibata Kazunori , Shimo-oku Ayumi , Shinkai Hisaaki , Shoda Ayaka , Somiya Kentaro , Sotani Hajime , Suemasa Aru , Sugiyama Naoshi , Suwa Yudai , Suzuki Rieko , Tagoshi Hideyuki , Takahashi Fuminobu , Takahashi Kakeru , Takahashi Keitaro , Takahashi Ryutaro , Takahashi Ryuichi , Takahashi Hirotaka , Akiteru Takamori , Takano Tadashi , Tanaka Nobuyuki , Taniguchi Keisuke , Taruya Atsushi , Tashiro Hiroyuki , Torii Yasuo , Toyoshima Morio , Tsujikawa Shinji , Ueda Akitoshi , Ueda Ken-ichi , Ushiba Takafumi , Utashima Masayoshi , Wakabayashi Yaka , Yagi Kent , Yamamoto Kazuhiro , Yamazaki Toshitaka , Yoo Chul-Moon , Yoshida Shijun , Yoshino Taizoh 
Published: May 2018

DECi-hertz Interferometer Gravitational-wave Observatory (DECIGO) is a future Japanese space gravitational-wave antenna. The most important objective of DECIGO, among various sciences to be aimed at, is to detect gravitational waves coming from the inflation of the universe. DECIGO consists of four clusters of spacecraft, and each cluster consists of three spacecraft with three Fabry–Perot Michelson interferometers. As a pathfinder mission of DECIGO, B-DECIGO will be launched, hopefully in the 2020s, to demonstrate technologies necessary for DECIGO as well as to lead to fruitful multimessenger astronomy. B-DECIGO is a small-scale or simpler version of DECIGO with the sensitivity slightly worse than that of DECIGO, yet good enough to provide frequent detection of gravitational waves.