A Wide-Field Search for Optical Counterparts of Gravitational Wave Sources with Tomo-e Gozen

• Project Area: Gravitational wave physics and astronomy: Genesis
• Project/Area Number: 18H04575
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Research Institution: The University of Tokyo
• Principal Investigator: 諸隈 智貴 東京大学, 大学院理学系研究科(理学部), 助教 (10594674)
• Project Period (FY): 2018-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2018: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
• Keywords: 重力波 / 可視光 / 広視野探査観測 / 広視野 / 探査観測 / 中性子星連星合体 / 広視野サーベイ / 対応天体探査観測

Outline of Annual Research Achievements

本研究は，数年以内に訪れる重力波電磁波対応天体および中性子星合体に対する統計的研究に備えて，木曽シュミット望遠鏡の新広視野カメラTomo-e Gozenを用いた重力波可視光対応天体探査を行うための開発，およびカメラ完成後の広視野探査観測を推進するものである. 前年度までにTomo-e Gozenカメラの全体3/4(84センサ中63センサを搭載)が完成していたが, 本年度4月に残りの21センサ(1/4)を追加し, 装置全体が完成した.
本年度4月からLIGO/Virgo重力波第3観測ラン(O3)が開始され, 途中1ヶ月の中断を挟み, 2020年3月途中まで継続された. 同じく前年度に開発を進めていた重力波アラートに対応した自動観測システム及び重力波用突発天体データ解析パイプラインを用いて, Tomo-e Gozenでの追観測及びデータ解析を行った．重力波望遠鏡グループから出されたアラート56件(撤回されたものは含まず)のうち, 26件に対して追観測を行い, 即時解析による対応天体候補が検出されないことを4件についてGCNにてJ-GEM collaborationの観測結果の一部として報告した．また, 他グループにより報告された対応天体候補の方向において取得したデータを用いて明るさの上限値をGCNにて報告した．結果として, 世界の他グループ同様, 対応天体は発見されなかったが, 本研究において行った装置開発・ソフトウェア開発により順調に追観測研究が遂行できた. またこれらの結果をGWPAW2019国際研究会における招待講演他で発表した．

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] Rochester Institute of Technology/Stanford University(米国)
• [Int'l Joint Research] University of Washington(米国)
• [Journal Article] Luminosity function of faint sporadic meteors measured with a wide-field CMOS mosaic camera Tomo-e PM (2019)
  • Author(s): Ohsawa Ryou, Toshikazu Shigeyama (26/37) et al.
  • Journal Title: Planetary and Space Science Volume: 165 Pages: 281-292
  • DOI: 10.1016/j.pss.2018.09.006
  • Peer Reviewed / Open Access
• [Journal Article] New Constraint on the Atmosphere of (50000) Quaoar from a Stellar Occultation (2019)
  • Author(s): Ko Arimatsu, Ryou Ohsawa, George L. Hashimoto, Seitaro Urakawa, Jun Takahashi, Miyako Tozuka, Yoichi Itoh, Misato Yamashita, et al.
  • Journal Title: The Astronomical Journal Volume: 158 Issue: 6 Pages: 236-236
  • DOI: 10.3847/1538-3881/ab5058
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] An optical search for transients lasting a few seconds (2019)
  • Author(s): Michael W. Richmond, Masaomi Tanaka, Tomoki Morokuma, Shigeyki Sako, Ryou Ohsawa, Noriaki Arima, Nozomu Tominaga, Mamoru Doi, et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 72 Issue: 1 Pages: 3-3
  • DOI: 10.1093/pasj/psz120
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] LIGO/Virgo S190930t: Upper limits on the two of the ZTF/GROWTH candidates (2019)
  • Author(s): Morokuma, T.; Utsumi, Y.; J-GEM Collaboration
  • Journal Title: GRB Coordinates Network, Circular Service Volume: 25907 Pages: 1-1
  • Open Access / Int'l Joint Research
• [Journal Article] LIGO-Virgo GW S190408an: J-GEM optical/NIR follow-up observations (2019)
  • Author(s): Murata, K. L., Sasada, M., Nakaoka, T., Morokuma, T., and Utsumi, Y., on behalf of J-GEM collaboration
  • Journal Title: GRB Coordinates Network, Circular Service Volume: 24064 Pages: 1-1
  • Open Access / Int'l Joint Research
• [Journal Article] LIGO/Virgo S190412m: J-GEM optical/NIR follow-up observations (2019)
  • Author(s): Tanaka, M., Niino, Y., Morokuma, T., Tominaga N., Utsumi, Y., Yanagisawa, K., Murata, K. L., Onozato, H., Akitaya, H., Itoh, R., Sekiguchi, Y., Oasa, Y., on behalf of J-GEM collaboration
  • Journal Title: GRB Coordinates Network, Circular Service Volume: 24113 Pages: 1-1
  • Open Access / Int'l Joint Research
• [Journal Article] LIGO/Virgo S190426c: J-GEM optical/NIR follow-up observations (2019)
  • Author(s): Niino, Y., Morokuma, T., Ohsawa, R., Sako, S., Shikauchi, M., Yanagisawa, K., Takagi K., Nakaoka, T., Sasada, M., Saito, T., Itoh, R., Ohta, K., Utsumi, Y., Sekiguchi, Y., Tominaga, N., on behalf of J-GEM collaboration
  • Journal Title: GRB Coordinates Network, Circular Service Volume: 24299 Pages: 1-1
  • Open Access / Int'l Joint Research
• [Journal Article] LIGO/Virgo S190412m: Further J-GEM optical/NIR observations (2019)
  • Author(s): Kawabata, K. S., Nishinaka, Y., Akitaya, H., Sasada, M., Tanaka, M., Takarada, T., Oasa, Y., Sekiguchi, Y., Ohsawa, R., Morokuma, T. et al.
  • Journal Title: GRB Coordinates Network, Circular Service Volume: 24350 Pages: 1-1
  • Open Access / Int'l Joint Research
• [Journal Article] A Long-duration Luminous Type IIn Supernova KISS15s: Strong Recombination Lines from the Inhomogeneous Ejecta?CSM Interaction Region and Hot Dust Emission from Newly Formed Dust (2019)
  • Author(s): Kokubo Mitsuru、Mitsuda Kazuma、Morokuma Tomoki、Tominaga Nozomu、Tanaka Masaomi、Moriya Takashi J.、Yoachim Peter、Ivezi? ?eljko、Sako Shigeyuki、Doi Mamoru
  • Journal Title: The Astrophysical Journal Volume: 872 Issue: 2 Pages: 135-135
  • DOI: 10.3847/1538-4357/aaff6b
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A (2018)
  • Author(s): The IceCube Collaboration、Fermi-LAT、MAGIC、AGILE、ASAS-SN、HAWC、H.E.S.S.、INTEGRAL、Kanata、Kiso、Kapteyn、Liverpool Telescope、Subaru、Swift/NuSTAR、VERITAS、VLA/17B-403 teams
  • Journal Title: Science Volume: 361 Issue: 6398 Pages: 1378-1378
  • DOI: 10.1126/science.aat1378
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The Tomo-e Gozen wide field CMOS camera for the Kiso Schmidt telescope (2018)
  • Author(s): Sako Shigeyuki, Toshikazu Shigeyama (21/39) et al.
  • Journal Title: Proceedings of the SPIE Volume: 10702 Pages: 1-17
  • DOI: 10.1117/12.2310049
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Evaluation of large pixel CMOS image sensors for the Tomo-e Gozen wide field camera (2018)
  • Author(s): Kojima Yuto, Toshikazu Shigeyama (20/39) et al.
  • Journal Title: Proceedings of the SPIE Volume: 10709 Pages: 1-10
  • DOI: 10.1117/12.2311301
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] 木曽シュミット望遠鏡Tomo-e Gozen高頻度突発天体サーベイ (2020)
  • Author(s): 諸隈智貴
  • Organizer: 日本天文学会2020年春季年会
• [Presentation] 短時間スケール突発天体のサーベイ観測 (2019)
  • Author(s): 諸隈智貴
  • Organizer: 第32回 理論懇シンポジウム
  • Invited
• [Presentation] Optical Wide-Field Surveys with Kiso/Tomo-e Gozen (2019)
  • Author(s): Morokuma, T.
  • Organizer: AMON Sixth Workshop
  • Int'l Joint Research / Invited
• [Presentation] J-GEM Observations for Gravitational Wave Sources (2019)
  • Author(s): Morokuma, T.
  • Organizer: GWPAW 2019
  • Int'l Joint Research / Invited
• [Presentation] すばる広視野探査とTMT分光によるIceCube高エネルギーニュートリノの超新星爆発起源説の検証 (2019)
  • Author(s): 諸隈智貴
  • Organizer: 日本天文学会2019年秋季年会
• [Presentation] Optical Time Domain and Multi-Messenger Astronomy (2019)
  • Author(s): Morokuma, T.
  • Organizer: 12th East Asian VLBI Workshop
  • Int'l Joint Research / Invited
• [Presentation] Northern Sky Transient Survey (2019)
  • Author(s): 諸隈智貴
  • Organizer: 木曽シュミットシンポジウム2019
• [Presentation] IceCubeニュートリノ電磁波対応天体サーベイ観測 (2019)
  • Author(s): 諸隈智貴
  • Organizer: 木曽シュミットシンポジウム2019
• [Presentation] Optical follow-up observations of GW events with the wide-field CMOS camera Tomo-e Gozen (2019)
  • Author(s): Niino, Y.
  • Organizer: GWPAW 2019
  • Int'l Joint Research
• [Presentation] Optical follow-up observations of GW events with the wide-field CMOS camera Tomo-e Gozen (2019)
  • Author(s): Niino, Y.
  • Organizer: Yamada Conference LXXI: Gamma-ray Bursts in the Gravitational Wave Era 2019
  • Int'l Joint Research
• [Presentation] 木曽Tomo-e Gozenによる可視光高頻度突発天体サーベイ (2019)
  • Author(s): 諸隈智貴
  • Organizer: 茨城大学重点研究 研究会：「突発・変動現象の電波フォローアップ」, 2019年
  • Invited
• [Presentation] Optical Transient Surveys (2019)
  • Author(s): Tomoki Morokuma
  • Organizer: 10th DTA symposium "Stellar deaths and their diversity"
  • Int'l Joint Research / Invited
• [Presentation] Northern Sky Transient Survey with Tomo-e Gozen (2018)
  • Author(s): 諸隈智貴
  • Organizer: 木曽シュミットシンポジウム2018
• [Presentation] Tomo-e Gozen計画 (2018)
  • Author(s): 酒向重行
  • Organizer: 木曽シュミットシンポジウム2018
• [Presentation] Optical GW Counterpart Searches with the Wide-Field CMOS sensor camera Tomo-e Gozen on 1m Kiso Schimidt Telescope (2018)
  • Author(s): Tomoki Morokuma
  • Organizer: The Second annual symposium of the innovative area "Gravitational Wave Physics and Astronomy: Genesis"
  • Int'l Joint Research
• [Presentation] 超新星捜索最前線：世界の動向 (2018)
  • Author(s): 諸隈智貴
  • Organizer: 第2回新天体捜索者会議
  • Invited
• [Presentation] 光・赤外線天文学大学間連携によるIceCubeアラート対応 (2018)
  • Author(s): 諸隈智貴
  • Organizer: 日本天文学会秋季年会2018
• [Remarks] Tomo-e Gozen project
  • URL: http://www.ioa.s.u-tokyo.ac.jp/tomoe/
• [Remarks] 東京大学木曽観測所トモエゴゼンの観測運用の開始について
  • URL: http://www.mtk.ioa.s.u-tokyo.ac.jp/kisohp/NEWS/pr20190930/pr20190930.html
• [Remarks] Tomo-e Gozenプロジェクト
  • URL: http://www.ioa.s.u-tokyo.ac.jp/tomoe/
• [Remarks] 木曽シュミット望遠鏡
  • URL: http://www.ioa.s.u-tokyo.ac.jp/kisohp/