New development in astrophysics through multi messenger observation of gravitational wave sources

2016 Fiscal Year Annual Research Report

• Project Area: New development in astrophysics through multimessenger observations of gravitational wave sources
• Project/Area Number: 24103001
• Research Institution: Kyoto University
• Principal Investigator: 中村 卓史 京都大学, 理学研究科, 名誉教授 (80155837)
• Co-Investigator(Kenkyū-buntansha): 田中 貴浩 京都大学, 理学研究科, 教授 (40281117) ; 神田 展行 大阪市立大学, 大学院理学研究科, 教授 (50251484) ; 河合 誠之 東京工業大学, 理学院, 教授 (80195031) ; 吉田 道利 広島大学, 宇宙科学センター, 教授 (90270446) ; ヴァギンズ マーク 東京大学, カブリ数物連携宇宙研究機構, 教授 (90509902)
• Project Period (FY): 2012-06-28 – 2017-03-31
• Keywords: 重力波 / X線・ガンマ線観測 / 光学赤外観測 / ニュートリノ観測 / データ解析 / 重力波の理論

Outline of Annual Research Achievements

2016年2月13日にLIGOが人類初の重力波を2015年9月14日に発見したと発表した。総括班はこれに関係して天文学会のpost dead line企画、物理学会のシンポジュウム、各種新聞へのコメント、学会誌や一般市民向けの各種雑誌への投稿、市民講演会等でその意義と今後の進展の予想の普及に努めた。このイベントはGW150914と呼ばれ太陽質量の30倍程度のブラックホール連星であるが、本領域ではすでに2014年に宇宙の初代星起源を予言していてそれがGW150914と見事に一致した。今年度には本領域から、別の起源として宇宙初期の密度揺らぎに伴う原始ブラックホール説が提案されダークマターの候補でもあるので世界的にも注目されている。また、星団系でのブラックホールの合体成長説も提案された。世界的にも多くの起源説が唱えられているが、どの説が正しいかはブラックホールの自転角運動量の分布と赤方偏移分布の決定が必須であり、我が国の将来計画DECIGOのような0.1Hz帯の宇宙重力波干渉計の建設が必要になった。これらは、領域の名前に相応しい「宇宙物理の新展開」である。LIGOのO2が2016年12月から現在も進行中で、X線と光学観測の２つの計画研究はLIGOとのMOUの下で共同観測を実施中である。取りまとめの科研費が採択されたので8月末に新しい結果も含めて領域のシンポジュウムを開催する。ニュートリノの計画研究はGdを入れた反ニュートリノ判定可能な世界初の200tの水チェレンコフ装置EGADSを予定通り2年間運転した。この運転実績はGdをsuper Kamiokandeに封入する決定にも繋がった。データ解析の計画研究は2016年3-４月のKAGRAの常温での試験観測のデータ取得に成功し、実データ転送の試験等に成功した。結論として、本領域は最初の想定を超えた成果を生みだしていると言える。

Research Progress Status

28年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

28年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] SLAC National Accelerator Laboratory/California Institute of Technology/Louisiana State University(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: SLAC National Accelerator Laboratory/California Institute of Technology/Louisiana State University
  • # of Other Institutions: 50
• [Int'l Joint Research] Max-Planck-Institut/University Hamburg/Leibniz University Hannover(ドイツ)
  • Country Name: GERMANY
  • Counterpart Institution: Max-Planck-Institut/University Hamburg/Leibniz University Hannover
  • # of Other Institutions: 4
• [Int'l Joint Research] European Gravitational Observatory/Gran Sasso Science Institute/University di Pisa(イタリア)
  • Country Name: ITALY
  • Counterpart Institution: European Gravitational Observatory/Gran Sasso Science Institute/University di Pisa
  • # of Other Institutions: 10
• [Int'l Joint Research] Australian National University/University of Western Australia(オーストラリア)
  • Country Name: AUSTRALIA
  • Counterpart Institution: Australian National University/University of Western Australia
• [Int'l Joint Research] University of Southampton/University of Glasgow/University of the West of Scotland(英国)
  • Country Name: UNITED KINGDOM
  • Counterpart Institution: University of Southampton/University of Glasgow/University of the West of Scotland
  • # of Other Institutions: 5
• [Journal Article] J-GEM follow-up observations of the gravitational wave source GW151226 (2017)
  • Author(s): Yoshida, M., Utsumi, Y., Tominaga, N., Morokuma, T., Tanaka, M., Asakura, Y., Matsubayashi, K., Ohta, K., Abe, F., Chimasu, S., Furusawa, H., Itoh, R., Itoh, Y., Kanda, Y., 他24名
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 68 Pages: 9
  • DOI: 10.1093/pasj/psw113
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Gravitational waves from merging intermediate-mass black holes : II Event rates at ground-based detectors (2017)
  • Author(s): Hisa-aki Shinkai, Nobuyuki Kanda, Toshikazu Ebisuzaki
  • Journal Title: Astrophys. J. Volume: 835 Pages: 276
  • DOI: 10.3847/1538-4357/835/2/276
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Gravitational wave quasinormal mode from Population III massive black hole binaries in various models of population synthesis (2016)
  • Author(s): Kinugawa, Tomoya; Nakano, Hiroyuki; Nakamura, Takashi
  • Journal Title: PTEP Volume: no 10 Pages: -
  • DOI: 10.1093/ptep/ptw143
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Pre-DECIGO can get the smoking gun to decide the astrophysical or cosmological origin of GW150914-like binary black holes (2016)
  • Author(s): Nakamura, Takashi; Ando, Masaki; Kinugawa, Tomoya; Nakano, Hiroyuki; Eda, Kazunari; Sato, Shuichi; Musha, Mitsuru; Akutsu, Tomotada; Tanaka, Takahiro; Seto, Naoki; Kanda Nobuyuki; Itoh Yousue
  • Journal Title: PTEP Volume: no 9 Pages: -
  • DOI: 10.1093/ptep/ptw127
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] J-GEM follow-up observations to search for an optical counterpart of the first gravitational wave source GW150914 (2016)
  • Author(s): Morokuma, T., Tanaka, M., Asakura, Y., Abe, F., Tristram, P.~J., Utsumi, Y., Doi, M., Fujisawa, K., Itoh, R., Itoh, Y., Kawabata, K.~S., Kawai, N., Kuroda, D., Yoshida, M., 他11名
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 68 Pages: L9
  • DOI: 10.1093/pasj/psw061
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Localization and Broadband Follow-up of the Gravitational-wave Transient GW150914 (2016)
  • Author(s): Abbott, B.~P., Abbott, R., Abbott, T.~D., Abernathy, M.~R., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R.~X., Adya, V.~B., Affeldt, C., Agathos, M., Yoshida, M., 他1560名
  • Journal Title: The Astrophysical Journal Volume: 826 Pages: L13
  • DOI: 10.3847/2041-8205/826/1/L13
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Search for neutrinos in Super-Kamiokande associated with gravitational-wave events GW150914 and GW151226 (2016)
  • Author(s): K. Abe et. al. (Super-Kamiokande collaboration)
  • Journal Title: The astrophysical journal, letters Volume: 830 Pages: L11
  • DOI: http://dx.doi.org/10.3847/2041-8205/830/1/L11
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Estimate of the radius responsible for quasinormal modes in the extreme Kerr limit and asymptotic behavior of the Sasaki-Nakamura transformation (2016)
  • Author(s): Hiroyuki Nakano, Norichika Sago, Takahiro Tanaka, Takashi Nakamura
  • Journal Title: PTEP Volume: 1093 Pages: 12
  • DOI: 10.1093/ptep/ptw098
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Primordial Black Hole Scenario for the Gravitational-Wave Event GW150914 (2016)
  • Author(s): Misao Sasaki, Teruaki Suyama, Takahiro Tanaka and Shuichiro Yokoyama
  • Journal Title: Phys. Rev. Lett. Volume: 117 Pages: 5
  • DOI: Phys. Rev. Lett.
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Synergy between ground and space based gravitational wave detectors for estimation of binary coalescence parameters (2016)
  • Author(s): Remya Nair, Sanjay Jhingan and Takahiro Tanaka
  • Journal Title: PTEP Volume: 1093 Pages: 18
  • DOI: 10.1093/ptep/ptw043
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] An Achromatic Break in the Afterglow of the Short GRB 140903A: Evidence for a Narrow Jet (2016)
  • Author(s): Troja, E., T. Sakamoto, S. B. Cenko, N. Kawai 他15名
  • Journal Title: The Astrophysical Journal Volume: 827 Pages: 102
  • DOI: 10.3847/0004-637X/827/2/102
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Soft X-ray observation of the prompt emission of GRB 100418A (2016)
  • Author(s): Imatani, R., H. Tomida, S. Nakahira, M. Kimura, T. Sakamoto, M. Arimoto, Y. Morooka, D. Yonetoku, N. Kawai, and H. Tsunemi,
  • Journal Title: Publications of the Astronomical Society of Japan, Volume: 68 Pages: S29
  • DOI: 10.1093/pasj/psv075
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] The MAXI/GSC Nova-Alert System and results of its first 68 months (2016)
  • Author(s): Negoro, H., M. Kohama, M. Serino, and 38 colleagues
  • Journal Title: Publications of the Astronomical Society of Japan, Volume: 68 Pages: S1
  • DOI: 10.1093/pasj/psw016
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Unveiling linearly and nonlinearly correlated signals between gravitational wave detectors and environmental monitors (2016)
  • Author(s): Hirotaka Yuzurihara, Kazuhiro Hayama, Shuhei Mano, Didier Verkindt, and Nobuyuki Kanda
  • Journal Title: Physical Review D Volume: 94 Pages: 1-7
  • DOI: 10.1103/PhysRevD.94.04200
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Status of Super-Kamiokande and SK-Gd (2017)
  • Author(s): M. Vagins
  • Organizer: Workshop on Supernova at Hyper-Kamiokande
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2017-02-12 – 2017-02-12
  • Int'l Joint Research / Invited
• [Presentation] Testing gravity theory by gravitational waves (2016)
  • Author(s): Takahiro Tanaka
  • Organizer: UTQuest WS5・YITP
  • Place of Presentation: YITP Kyoto Japan
  • Year and Date: 2016-12-12 – 2016-12-15
  • Int'l Joint Research / Invited
• [Presentation] J-GEM: EM follow-up Network in Japan (2016)
  • Author(s): 吉田道利
  • Organizer: RESCUE symposium 2016
  • Place of Presentation: University of Tokyo, Tokyo
  • Year and Date: 2016-12-06 – 2016-12-06
  • Int'l Joint Research / Invited
• [Presentation] Gadolinium Loading in WC Detectors (2016)
  • Author(s): M. Vagins
  • Organizer: 12th Annual Applied Neutrino Physics Workshop (AAP16)
  • Place of Presentation: Liverpool, Merseyside, England
  • Year and Date: 2016-12-01 – 2016-12-01
  • Int'l Joint Research / Invited
• [Presentation] Japanese electromagnetic follow-up network for gravitational wave sources: J-GEM (2016)
  • Author(s): 吉田道利
  • Organizer: KAGRA 2nd international meeting
  • Place of Presentation: Beijing Normal University, Beijing, China
  • Year and Date: 2016-11-11 – 2016-11-11
  • Int'l Joint Research / Invited
• [Presentation] Astronomy and Cosmology from the first detection of gravitational wave (2016)
  • Author(s): Takashi Nakamura
  • Organizer: Hanoi international workshop “Gravitation and the Universe”
  • Place of Presentation: Hanoi Vietnam
  • Year and Date: 2016-10-30 – 2016-10-30
  • Int'l Joint Research / Invited
• [Presentation] 重力波観測入門 (2016)
  • Author(s): 神田展行
  • Organizer: Flavor Physics Workshop 2016
  • Place of Presentation: 岩室温泉ゆもとや
  • Year and Date: 2016-10-29 – 2016-10-29
  • Invited
• [Presentation] Status and Future of KAGRA (2016)
  • Author(s): Nobuyuki Kanda, KAGRA collaboration
  • Organizer: The 26th Workshop on General Relativity and Gravitation in Japan
  • Place of Presentation: Osaka City University
  • Year and Date: 2016-10-26 – 2016-10-26
  • Int'l Joint Research / Invited
• [Presentation] Revival of classical black hole evaporation? (2016)
  • Author(s): Takahiro Tanaka
  • Organizer: Rethinking Quantum Field Theory・
  • Place of Presentation: DESY Germany
  • Year and Date: 2016-09-27 – 2016-09-30
  • Int'l Joint Research / Invited
• [Presentation] 重力波イベントに対する電磁フォローアップ観測の可能性について (2016)
  • Author(s): 中村卓史
  • Organizer: 日本天文学会
  • Place of Presentation: 愛媛大学 松山市
  • Year and Date: 2016-09-15 – 2016-09-15
• [Presentation] Supernova neutrinos: MeV Messengers of the Extreme (2016)
  • Author(s): M. Vagins
  • Organizer: TeV Particle Astrophysics 2016 (TeVPA16)
  • Place of Presentation: CERN, Geneva, Switzerland
  • Year and Date: 2016-09-13 – 2016-09-13
  • Int'l Joint Research / Invited
• [Presentation] HinOTORI Project and J-GEM Collaboration (2016)
  • Author(s): 吉田道利
  • Organizer: Time-domain astronomy in China
  • Place of Presentation: National Astronomical Observatories, Beijing, China
  • Year and Date: 2016-07-11 – 2016-07-11
  • Int'l Joint Research / Invited
• [Funded Workshop] The 26th Workshop on General Relativity and Gravitation (JGRG26) (2016)
  • Place of Presentation: Osaka City University Japan
  • Year and Date: 2016-10-24 – 2016-10-28