Abstract
DECIGO (DECi-hertz Interferometer Gravitational wave Observatory) is the planned Japanese space gravitational wave antenna, aiming to detect gravitational waves from astrophysically and cosmologically significant sources mainly between 0.1 Hz and 10 Hz and thus to open a new window for gravitational wave astronomy and for the universe. DECIGO will consists of three drag-free spacecraft arranged in an equilateral triangle with 1000 km arm lengths whose relative displacements are measured by a differential Fabry-Perot interferometer, and four units of triangular Fabry-Perot interferometers are arranged on heliocentric orbit around the sun. DECIGO is vary ambitious mission, we plan to launch DECIGO in era of 2030s after precursor satellite mission, B-DECIGO. B-DECIGO is essentially smaller version of DECIGO: B-DECIGO consists of three spacecraft arranged in an triangle with 100 km arm lengths orbiting 2000 km above the surface of the earth. It is hoped that the launch date will be late 2020s for the present..
Highlights
The first direct detection of gravitational wave (GW) has been done with aLIGO [1]
DECIGO will consists of three drag-free spacecraft arranged in an equilateral triangle
with 1000 km arm lengths whose relative displacements are measured by a differential Fabry-Perot interferometer
Summary
Shuichi Sato1, Seiji Kawamura18, Masaki Ando3, Takashi Nakamura4, Kimio Tsubono3, Akito Araya5, Ikkoh Funaki6, Kunihito Ioka7, Nobuyuki Kanda8, Shigenori Moriwaki9, Mitsuru Musha10, Kazuhiro Nakazawa3, Kenji Numata11, Shin-ichiro Sakai6, Naoki Seto2, Takeshi Takashima6, Takahiro Tanaka12, Kazuhiro Agatsuma3, Koh-suke Aoyanagi27, Koji Arai2, Hideki Asada13, Yoichi Aso14, Takeshi Chiba15, Toshikazu Ebisuzaki44, Yumiko Ejiri16, Motohiro Enoki45, Yoshiharu Eriguchi35, Masa-Katsu Fujimoto2, Ryuichi Fujita46, Mitsuhiro Fukushima2, Toshifumi Futamase43, Katsuhiko Ganzu4, Tomohiro Harada47, Tatsuaki Hashimoto6, Kazuhiro Hayama48, Wataru Hikida38, Yoshiaki Himemoto49, Hisashi Hirabayashi17, Takashi Hiramatsu18, Feng-Lei Hong19, Hideyuki Horisawa20, Mizuhiko Hosokawa21, Kiyotomo Ichiki3, Takeshi Ikegami19, Kaiki T. Inoue22, Koji Ishidoshiro3, Hideki Ishihara8, Takehiko Ishikawa6, Hideharu Ishizaki2, Hiroyuki Ito21, Yousuke Itoh50, Nobuki Kawashima22, Fumiko Kawazoe23, Naoko Kishimoto6, Kenta Kiuchi27, Shiho Kobayashi24, Kazunori Kohri25, Hiroyuki Koizumi6, Yasufumi Kojima51, Keiko Kokeyama16, Wataru ɹ Kokuyama3, Kei Kotake2, Yoshihide Kozai26, Hideaki Kudoh3, Hiroo Kunimori21, Hitoshi Kuninaka6, Kazuaki Kuroda18, Kei-ichi Maeda27, Hideo Matsuhara6, Yasushi Mino14, Osamu Miyakawa14, Shinji Miyoki18, Mutsuko Y. Morimoto6, Tomoko Morioka 3, Toshiyuki Morisawa4, Shinji Mukohyama39, Shigeo Nagano21, Isao Naito57, Kouji Nakamura2, Hiroyuki Nakano52, Kenichi Nakao8, Shinichi Nakasuka31, Yoshinori Nakayama29, Erina Nishida16, Kazutaka Nishiyama6, Atsushi Nishizawa30, Yoshito Niwa30, Taiga Noumi31, Yoshiyuki Obuchi2, Masatake Ohashi18, Naoko Ohishi2, Masashi Ohkawa32, Norio Okada2, Kouji Onozato3, Kenichi Oohara32, Norichika Sago33, Motoyuki Saijo34, Masaaki Sakagami30, Shihori Sakata2, Misao Sasaki12, Takashi Sato32, Masaru Shibata35, Hisaaki Shinkai53, Kentaro Somiya14, Hajime Sotani36, Naoshi Sugiyama37, Yudai Suwa3, Rieko Suzuki16, Hideyuki Tagoshi38, Fuminobu Takahashi39, Kakeru Takahashi3, Keitaro Takahashi12, Ryutaro Takahashi2, Ryuichi Takahashi37, Tadayuki Takahashi6, Hirotaka Takahashi54, Takamori Akiteru5, Tadashi Takano40, Keisuke Taniguchi50, Atsushi Taruya3, Hiroyuki Tashiro4, Yasuo Torii2, Morio Toyoshima21, Shinji Tsujikawa41, Yoshiki Tsunesada55, Akitoshi Ueda2, Ken-ichi Ueda10, Masayoshi Utashima56, Yaka Wakabayashi16, Hiroshi Yamakawa42, Kazuhiro Yamamoto23, Toshitaka Yamazaki2, Jun’ichi Yokoyama3, Chul-Moon Yoo8, Shijun Yoshida43, Taizoh Yoshino28, Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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