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

Author:

Kawamura Seiji1,Ando Masaki2,Seto Naoki3,Sato Shuichi4,Musha Mitsuru5,Kawano Isao6,Yokoyama Jun’ichi7,Tanaka Takahiro3,Ioka Kunihito8,Akutsu Tomotada9,Takashima Takeshi10,Agatsuma Kazuhiro11,Araya Akito12,Aritomi Naoki2,Asada Hideki13,Chiba Takeshi14,Eguchi Satoshi15,Enoki Motohiro16,Fujimoto Masa-Katsu9,Fujita Ryuichi17,Futamase Toshifumi18,Harada Tomohiro19,Hayama Kazuhiro15,Himemoto Yoshiaki20,Hiramatsu Takashi19,Hong Feng-Lei21,Hosokawa Mizuhiko22,Ichiki Kiyotomo1,Ikari Satoshi23,Ishihara Hideki24,Ishikawa Tomohiro1,Itoh Yousuke24,Ito Takahiro25,Iwaguchi Shoki1,Izumi Kiwamu10,Kanda Nobuyuki24,Kanemura Shinya26,Kawazoe Fumiko27,Kobayashi Shiho28,Kohri Kazunori29,Kojima Yasufumi30,Kokeyama Keiko31,Kotake Kei15,Kuroyanagi Sachiko1,Maeda Kei-ichi32,Matsushita Shuhei23,Michimura Yuta2,Morimoto Taigen1,Mukohyama Shinji8,Nagano Koji10,Nagano Shigeo22,Naito Takeo1,Nakamura Kouji9,Nakamura Takashi3,Nakano Hiroyuki33,Nakao Kenichi24,Nakasuka Shinichi23,Nakayama Yoshinori34,Nakazawa Kazuhiro35,Nishizawa Atsushi7,Ohkawa Masashi36,Oohara Kenichi37,Sago Norichika3,Saijo Motoyuki38,Sakagami Masaaki39,Sakai Shin-ichiro10,Sato Takashi40,Shibata Masaru841,Shinkai Hisaaki42,Shoda Ayaka9,Somiya Kentaro43,Sotani Hajime44,Takahashi Ryutaro9,Takahashi Hirotaka45,Akiteru Takamori12,Taniguchi Keisuke46,Taruya Atsushi8,Tsubono Kimio2,Tsujikawa Shinji32,Ueda Akitoshi47,Ueda Ken-ichi5,Watanabe Izumi1,Yagi Kent48,Yamada Rika1,Yokoyama Shuichiro35,Yoo Chul-Moon1,Zhu Zong-Hong49

Affiliation:

1. Division of Particle and Astrophysical Sciences, Nagoya University, Nagoya, Aichi, 464-8602, Japan

2. Department of Physics, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan

3. Department of Physics, Graduate School of Science, Kyoto University, Kyoto, Kyoto 606-8502, Japan

4. Faculty of Science and Engineering, Hosei University, Koganei, Tokyo 184-8584, Japan

5. Institute for Laser Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan

6. Japan Aerospace Exploration Agency, Tsukuba Space Center, Tsukuba, Ibaraki 305-8505, Japan

7. Research Center for the Early Universe, School of Science, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan

8. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan

9. Gravitational Wave Science Project, National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan

10. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan

11. School of Physics and Astronomy and Institute for Gravitational Wave Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK

12. Earthquake Research Institute, The University of Tokyo, Bunkyo, Tokyo 113-0032, Japan

13. Faculty of Science and Technology, Hirosaki University, Hirosaki, Aomori 036-8561, Japan

14. Department of Physics, College of Humanities and Sciences, Nihon University, Setagaya, Tokyo 156-8550, Japan

15. Department of Applied Physics, Faculty of Science, Fukuoka University, Fukuoka, Fukuoka 814-0180, Japan

16. Faculty of Business Administration, Tokyo Keizai University, Kokubunji, Tokyo 185-8502, Japan

17. Institute of Liberal Arts, Otemon Gakuin University, Ibaraki, Osaka 567-8502, Japan

18. Kyoto Sangyo University, Kyoto, Kyoto 603-8555, Japan

19. Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan

20. College of Industrial Technology, Nihon University, Narashino, Chiba 275-8576, Japan

21. Department of Physics, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan

22. National Institute of Information and Communications Technology (NICT), Koganei, Tokyo 184-8795, Japan

23. Department of Aeronautics and Astronautics, The University of Tokyo, Bunkyo, Tokyo 113-8656 Japan

24. Department of Physics, Osaka City University, Osaka, Osaka 558-8585, Japan

25. Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan

26. Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan

27. Max Planck Institute for Gravitational Physics and Leibniz Universität Hannover, Callinstr. 38, 30167 Hannover, Germany

28. Astrophysics Research Institute, Liverpool John Moores University, Liverpool L3 5RF, UK

29. Institute of Particle and Nuclear Studies, KEK, Tsukuba, Ibaraki 305-0801, Japan

30. Graduate School of Science, Hiroshima University, Higashi-hiroshima, Hiroshima 739-8526, Japan

31. KAGRA Observatory, ICRR, The University of Tokyo, Hida, Gifu 506-1205, Japan

32. Department of Physics, Graduate School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo, 169-8555, Japan

33. Faculty of Law, Ryukoku University, Kyoto, Kyoto 612-8577, Japan

34. Department of Aerospace Engineering, National Defense Academy, Yokosuka, Kanagawa 239-8686, Japan

35. The Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya, Aichi 464-8602, Japan

36. Faculty of Engineering, Niigata University, Niigata, Niigata 950-2181, Japan

37. Department of Physics, Niigata University, Niigata, Niigata 950-2181, Japan

38. Research Institute for Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan

39. Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Kyoto 606-8501, Japan

40. Niigata College of Technology, Niigata, Niigata 950-2076, Japan

41. Max Planck Institute for Gravitational Physics at Potsdam, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany

42. Department of Information Systems, Osaka Institute of Technology, Hirakata, Osaka 573-0196, Japan

43. Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan

44. RIKEN, Wako, Saitama 351-0198, Japan

45. Department of Management and Information Systems Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan

46. Department of Physics, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan

47. JASMINE Project, National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan

48. Department of Physics, University of Virginia, Charlottesville, VA 22904, USA

49. Department of Astronomy, Beijing Normal University, Beijing, Beijing 100875, China

Abstract

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.

Publisher

Oxford University Press (OUP)

Subject

General Physics and Astronomy

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