Physics and Astrophysics with gravitational waves from Binary Neutron star Coalescences, Black Hole Neutron star Coalescences, Pulsars and Magnetars

• Project Area: Gravitational wave physics and astronomy: Genesis
• Project/Area Number: 17H06361
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: The University of Tokyo
• Principal Investigator: 田越 秀行 東京大学, 宇宙線研究所, 教授 (30311765)
• Co-Investigator(Kenkyū-buntansha): 小嶌 康史 広島大学, 先進理工系科学研究科(理), 教授 (10192577) ; カンノン キップ 東京大学, 大学院理学系研究科(理学部), 教授 (50777886) ; 伊藤 洋介 大阪市立大学, 大学院理学研究科, 准教授 (60443983) ; 川口 恭平 東京大学, 宇宙線研究所, 助教 (60822210) ; 木内 建太 京都大学, 基礎物理学研究所, 特任准教授 (40514196) ; 柴田 大 京都大学, 基礎物理学研究所, 教授 (80252576)
• Project Period (FY): 2017-06-30 – 2022-03-31
• Project Status: Granted (Fiscal Year 2021)
• Budget Amount: ¥168,090,000 (Direct Cost: ¥129,300,000、Indirect Cost: ¥38,790,000); Fiscal Year 2021: ¥33,540,000 (Direct Cost: ¥25,800,000、Indirect Cost: ¥7,740,000); Fiscal Year 2020: ¥45,890,000 (Direct Cost: ¥35,300,000、Indirect Cost: ¥10,590,000); Fiscal Year 2019: ¥29,640,000 (Direct Cost: ¥22,800,000、Indirect Cost: ¥6,840,000); Fiscal Year 2018: ¥31,200,000 (Direct Cost: ¥24,000,000、Indirect Cost: ¥7,200,000); Fiscal Year 2017: ¥27,820,000 (Direct Cost: ¥21,400,000、Indirect Cost: ¥6,420,000)
• Keywords: 重力波 / 中性子星 / ブラックホール / レーザー干渉計型重力波検出器 / レーザー干渉計 / パルサー / マグネター / キロノバ / 宇宙物理学 / 連星中性子星 / レーザー干渉計重力波検出器 / 一般相対性理論

Outline of Annual Research Achievements

2020年4月に行われた、KAGRAとGEOとの国際共同観測のデータ解析を行った。コンパクト連星合体重力波探索パイプラインgstlalを用いた全天探索，詳細な波形を仮定しないバースト重力波探索、観測期間中に発生した４つのガンマ線バーストの時刻と方向に特化した連星合体探索とバースト重力波探索を行った。その結果いずれの解析でも有意な重力波信号は見つからなかった。しかしながらこれらの解析は、KAGRAが国際重力波検出器ネットワークの一員として、天文学天体物理学的成果に貢献できることを示しているといえる重要な結果である。
観測される重力波イベントの統計的有意さを評価する指標として，q値を用いる方法について研究を行った．q値は検出された重力波信号が誤検出である確率を表している．LIGOのO1、O2データを用いた連星合体探索による，公開されているイベントトリガーリストに適用して，各イベントのq値を求め、従来用いられている指標であるP-astroと比較した。その結果P-astroとq値による有意さは概ね同じ結果を与えるが、P-astroで有意と認定される閾値近傍のいつくかのイベントについては、有意であったものが有意でなくなる場合があることがわかった。
中性子星地殻において、磁気的ストレスが閾値を超えたときに現れる塑性流動の効果を調べた。ホールドリフト、オーミック散逸、ローレンツ力による流体運動を考慮し、磁場の変化を計算した。ローレンツ力によって誘起されるバルク速度は、低粘性領域と強磁場領域で大きな影響を与えることがわかった。
数値相対論研究では、ブラックホール・中性子星連星の低離心率初期データを計算する方法を開発した。非歳差運動と歳差運動の両方の場合で、3周回運動の軌道シミュレーションを行い、軌道の離心率を0.001以下にすることに成功した。

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

2020年4月のKAGRAとGEOのデータ解析が終了し、論文はすでに投稿され受理されている。これはKAGRAとして初めての国際共同観測であり、データ解析はLIGO-Virgoとの国際ネットワークの枠組みで行われた。有意な重力波信号は見つからなかったが、データに大きな問題はなく、今後感度が向上すれば直ぐにKAGRAが天文学天体物理学に貢献できることが示されたことは非常に重要な点である。その他にも数値相対論の研究や中性子星の物理状態についての研究も進んでいる。

Strategy for Future Research Activity

重力波データ解析の研究では、2022年中に開始される見込みである，LIGO-Virgo-KAGRAの第４回観測運転の準備を行う．連星合体重力波解析の様々なツールを用いた解析を行う準備を行う．その他の研究については，これまでどおり，連星合体重力波の解析方法，連星中性子星合体の数値相対論とキロノバの研究，パルサーマグネターからの重力波の研究などを広く推し進めていく．

Research Products

• [Int'l Joint Research] NASA Goddard Space Flight Center/University of Minnesota-Twin Cities(米国)
• [Int'l Joint Research] IUCAA(インド)
• [Int'l Joint Research] Inje University/Ewha Womans University(韓国)
• [Int'l Joint Research] University College London/University of Cambridge/University of Portsmouth(英国)
• [Int'l Joint Research] Institut d’Astrophysique de Paris(フランス)
• [Int'l Joint Research]
• [Int'l Joint Research] MPI-AEI(ドイツ)
• [Int'l Joint Research] INFN Pisa, University of Pisa(イタリア)
• [Int'l Joint Research] IUCAA(インド)
• [Int'l Joint Research] LAPP, Universite Grenoble Alpes(フランス)
• [Int'l Joint Research] Inje University/Ewha Womans University(韓国)
• [Journal Article] Vibration isolation systems for the beam splitter and signal recycling mirrors of the KAGRA gravitational wave detector (2021)
  • Author(s): KAGRA Collaboration
  • Journal Title: Classical and Quantum Gravity Volume: 38 Issue: 6 Pages: 065011-065011
  • DOI: 10.1088/1361-6382/abd922
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Reducing orbital eccentricity in initial data of black hole?neutron star binaries in the puncture framework (2021)
  • Author(s): Kyutoku Koutarou、Kawaguchi Kyohei、Kiuchi Kenta、Shibata Masaru、Taniguchi Keisuke
  • Journal Title: Physical Review D Volume: 103 Issue: 2 Pages: 023002-023002
  • DOI: 10.1103/physrevd.103.023002
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Properties of the remnant disk and the dynamical ejecta produced in low-mass black hole-neutron star mergers (2021)
  • Author(s): Hayashi Kota、Kawaguchi Kyohei、Kiuchi Kenta、Kyutoku Koutarou、Shibata Masaru
  • Journal Title: Physical Review D Volume: 103 Issue: 4 Pages: 043007-043007
  • DOI: 10.1103/physrevd.103.043007
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Application of the independent component analysis to the iKAGRA data (2020)
  • Author(s): T. Akutsu, et al. (KAGRA Collaboration)
  • Journal Title: Progress of Theoretical and Experimental Physics Volume: 2020 Issue: 5 Pages: 27-27
  • DOI: 10.1093/ptep/ptaa056
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Simulations of Early Kilonova Emission from Neutron Star Mergers (2020)
  • Author(s): Banerjee Smaranika、Tanaka Masaomi、Kawaguchi Kyohei、Kato Daiji、Gaigalas Gediminas
  • Journal Title: The Astrophysical Journal Volume: 901 Issue: 1 Pages: 29-29
  • DOI: 10.3847/1538-4357/abae61
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Magnetic-field evolution with large-scale velocity circulation in a neutron-star crust (2020)
  • Author(s): Kojima Yasufumi、Suzuki Kazuki
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 494 Issue: 3 Pages: 3790-3798
  • DOI: 10.1093/mnras/staa1045
  • Peer Reviewed
• [Journal Article] Charged fluids encircling compact objects: force representations and conformal geometries (2020)
  • Author(s): Kovar Jiri、Kojima Yasufumi、Slany Petr、Stuchlik Zdenek、Karas Vladimir
  • Journal Title: Classical and Quantum Gravity Volume: 37 Issue: 24 Pages: 245007-245007
  • DOI: 10.1088/1361-6382/abbe70
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] On the possibility of GW190425 being a black hole--neutron star binary merger (2020)
  • Author(s): Koutarou Kyutoku, Sho Fujibayashi, Kota Hayashi, Kyohei Kawaguchi, Kenta Kiuchi, Masaru Shibata, Masaomi Tanaka
  • Journal Title: The Astrophysical Journal Letters Volume: 890 Issue: 1 Pages: 4-4
  • DOI: 10.3847/2041-8213/ab6e70
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Diversity of Kilonova Light Curves (2020)
  • Author(s): Kawaguchi, Shibata, M., Tanaka, M.
  • Journal Title: The Astrophysical Journal Volume: 889 Issue: 2 Pages: 171-171
  • DOI: 10.3847/1538-4357/ab61f6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] An arm length stabilization system for KAGRA and future gravitational-wave detectors (2020)
  • Author(s): Akutsu T, et al. (KAGRA Collaboration)
  • Journal Title: Classical and Quantum Gravity Volume: 37 Issue: 3 Pages: 035004-035004
  • DOI: 10.1088/1361-6382/ab5c95
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Dark matter signals on a laser interferometer (2020)
  • Author(s): Tsuchida Satoshi、Kanda Nobuyuki、Itoh Yousuke、Mori Masaki
  • Journal Title: Physical Review D Volume: 101 Issue: 2 Pages: 023005-023005
  • DOI: 10.1103/physrevd.101.023005
  • NAID: 120006781999
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Sub-radian-accuracy gravitational waves from coalescing binary neutron stars in numerical relativity. II. Systematic study on the equation of state, binary mass, and mass ratio (2020)
  • Author(s): Kiuchi, K., Kawaguchi, K., Kyutoku, K., Sekiguchi, Y., & Shibata, M.
  • Journal Title: Physical Review D Volume: 101 Issue: 8 Pages: 84006-84006
  • DOI: 10.1103/physrevd.101.084006
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Constraint on the Ejecta Mass for Black Hole Neutron Star Merger Event Candidate S190814bv (2020)
  • Author(s): Kawaguchi Kyohei、Shibata Masaru、Tanaka Masaomi
  • Journal Title: The Astrophysical Journal Volume: 893 Issue: 2 Pages: 153-153
  • DOI: 10.3847/1538-4357/ab8309
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Reanalysis of the binary neutron star mergers GW170817 and GW190425 using numerical-relativity calibrated waveform models (2020)
  • Author(s): Narikawa Tatsuya、Uchikata Nami、Kawaguchi Kyohei、Kiuchi Kenta、Kyutoku Koutarou、Shibata Masaru、Tagoshi Hideyuki
  • Journal Title: Physical Review Research Volume: 2 Issue: 4 Pages: 043039-043039
  • DOI: 10.1103/physrevresearch.2.043039
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Discrepancy in tidal deformability of GW170817 between the Advanced LIGO twin detectors (2019)
  • Author(s): Tatsuya Narikawa, Nami Uchikata, Kyohei Kawaguchi, Kenta Kiuchi, Koutarou Kyutoku, Masaru Shibata, Hideyuki Tagoshi
  • Journal Title: Physical Review Research Volume: 1 Issue: 3 Pages: 033055-033055
  • DOI: 10.1103/physrevresearch.1.033055
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A time-frequency analysis of gravitational wave signals with Non-Harmonic Analysis (2019)
  • Author(s): K. Yanagisawa, D. Jia, S. Hirobayashi, N. Uchikata, T. Narikawa, K. Ueno, H. Takahashi, H. Tagoshi
  • Journal Title: Progress of Theoretical and Experimental Physics Volume: 2019-6 Issue: 6 Pages: 1-25
  • DOI: 10.1093/ptep/ptz043
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Short GRB 160821B: a reverse shock, a refreshed shock, and a well-sampled kilonova (2019)
  • Author(s): Lamb, G. P., et al.
  • Journal Title: The Astrophysical Journal Volume: 883 Issue: 1 Pages: 48-48
  • DOI: 10.3847/1538-4357/ab38bb
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Stochastic gravitational wave background mapmaking using regularized deconvolution (2019)
  • Author(s): Panda Sambit , Bhagwat Swetha , Suresh Jishnu , Mitra Sanjit
  • Journal Title: Physical Review D Volume: 100 Issue: 4 Pages: 043541-043541
  • DOI: 10.1103/physrevd.100.043541
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Directional limits on persistent gravitational waves using data from Advanced LIGO's first two observing runs (2019)
  • Author(s): Abbott B. P. , Abbott R. , Abbott T. D. , Abraham S. , Acernese F. , Ackley K. , Adams C. , Adhikari R. X. , Adya V. B. , Affeldt C. , et al.
  • Journal Title: Physical Review D Volume: 100 Issue: 6 Pages: 062001-062001
  • DOI: 10.1103/physrevd.100.062001
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Low-latency Gravitational-wave Alerts for Multimessenger Astronomy during the Second Advanced LIGO and Virgo Observing Run (2019)
  • Author(s): Abbott B. P. , Abbott R. , Abbott T. D. , Abraham S. , Acernese F. , Ackley K. , Adams C. , Adhikari R. X. , Adya V. B. , Affeldt C. , et al.
  • Journal Title: The Astrophysical Journal Volume: 875 Issue: 2 Pages: 161-161
  • DOI: 10.3847/1538-4357/ab0e8f
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] First cryogenic test operation of underground km-scale gravitational-wave observatory KAGRA (2019)
  • Author(s): Akutsu T, et al. (KAGRA Collaboration)
  • Journal Title: Classical and Quantum Gravity Volume: 36 Issue: 16 Pages: 165008-165008
  • DOI: 10.1088/1361-6382/ab28a9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Vibration isolation system with a compact damping system for power recycling mirrors of KAGRA (2019)
  • Author(s): KAGRA Collaboration
  • Journal Title: Classical and Quantum Gravity Volume: 36 Issue: 9 Pages: 95015-95015
  • DOI: 10.1088/1361-6382/ab0fcb
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] KAGRA: 2.5 generation interferometric gravitational wave detector (2019)
  • Author(s): T. Akutsu, K. Kawaguchi, Y. Kojima, T. Narikawa, M. Shibata, H. Tagoshi, N. Uchikata, K. Ueno, et al. (KAGRA Collaboration)
  • Journal Title: Nature Astronomy Volume: 3 Pages: 35-40
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Non-thermal afterglow of the binary neutron star merger GW170817: a more natural modelling of electron energy distribution leads to a qualitatively different new solution (2019)
  • Author(s): Lin Haoxiang、Totani Tomonori、Kiuchi Kenta
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 485 Issue: 2 Pages: 2155-2166
  • DOI: 10.1093/mnras/stz453
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Prospects for observing and localizing gravitational-wave transients with Advanced LIGO, Advanced Virgo and KAGRA (2018)
  • Author(s): B. P. Abbott et al.
  • Journal Title: Living Reviews in Relativity Volume: 21 Issue: 1 Pages: 1-57
  • DOI: 10.1007/s41114-018-0012-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Time-frequency-based non-harmonic analysis to reduce line-noise impact for LIGO observation system (2018)
  • Author(s): Dongbao Jia, Kenta Yanagisawa, Masaya Hasegawa, Shigeki Hirobayashi, Hideyuki Tagoshi, Tatsuya Narikawa, Nami Uchikata, Hirotaka Takahashi
  • Journal Title: Astronomy and Computing Volume: Vol.25 Pages: 238-246
  • DOI: 10.1016/j.ascom.2018.10.003
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Multiwindow Nonharmonic Analysis Method for Gravitational Waves (2018)
  • Author(s): Dongbao Jia, Kenta Yanagisawa, Yuta Ono, Kanna Hirobayashi, Masaya Hasegawa, Shigeki Hirobayashi, Hideyuki Tagoshi, Tatsuya Narikawa, Nami Uchikata, Hirotaka Takahashi
  • Journal Title: IEEE Access Volume: Vol.6 No.1 Pages: 48645-48655
  • DOI: 10.1109/access.2018.2867494
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Synchrotron Radiation from the Fast Tail of Dynamical Ejecta of Neutron Star Mergers (2018)
  • Author(s): Hotokezaka Kenta , Kiuchi Kenta , Shibata Masaru , Nakar Ehud , Piran Tsvi
  • Journal Title: The Astrophysical Journal Volume: 867 Issue: 2 Pages: 95-95
  • DOI: 10.3847/1538-4357/aadf92
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Mass Ejection from the Remnant of a Binary Neutron Star Merger: Viscous-radiation Hydrodynamics Study (2018)
  • Author(s): Fujibayashi Sho、Kiuchi Kenta、Nishimura Nobuya、Sekiguchi Yuichiro、Shibata Masaru
  • Journal Title: The Astrophysical Journal Volume: 860 Issue: 1 Pages: 64-64
  • DOI: 10.3847/1538-4357/aabafd
  • Peer Reviewed / Open Access
• [Journal Article] Repeating and non-repeating fast radio bursts from binary neutron star mergers (2018)
  • Author(s): Yamasaki Shotaro、Totani Tomonori、Kiuchi Kenta
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 印刷中 Issue: 3 Pages: 39-39
  • DOI: 10.1093/pasj/psy029
  • Peer Reviewed / Open Access
• [Journal Article] Global simulations of strongly magnetized remnant massive neutron stars formed in binary neutron star mergers (2018)
  • Author(s): Kiuchi Kenta、Kyutoku Koutarou、Sekiguchi Yuichiro、Shibata Masaru
  • Journal Title: Physical Review D Volume: 97 Issue: 12 Pages: 124039-124039
  • DOI: 10.1103/physrevd.97.124039
  • Peer Reviewed / Open Access
• [Journal Article] Very fast stochastic gravitational wave background map making using folded data (2018)
  • Author(s): Ain Anirban , Suresh Jishnu , Mitra Sanjit
  • Journal Title: Physical Review D Volume: 98 Issue: 2 Pages: 024001-024001
  • DOI: 10.1103/physrevd.98.024001
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Search for Tensor, Vector, and Scalar Polarizations in the Stochastic Gravitational-Wave Background (2018)
  • Author(s): Abbott B.P. , Abbott R. , Abbott T.D. , Acernese F. , Ackley K. , Adams C. , Adams T. , Addesso P. , Adhikari R.X. , Adya V.B. , et al.
  • Journal Title: Physical Review Letters Volume: 120 Issue: 20 Pages: 201102-201102
  • DOI: 10.1103/physrevlett.120.201102
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Twisted magnetosphere with quadrupolar fields in the exterior of a neutron star (2018)
  • Author(s): Kojima Yasufumi
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 477 Issue: 3 Pages: 3530-3538
  • DOI: 10.1093/mnras/sty866
  • Peer Reviewed / Open Access
• [Journal Article] Frequency-domain gravitational waveform models for inspiraling binary neutron stars (2018)
  • Author(s): Kawaguchi Kyohei、Kiuchi Kenta、Kyutoku Koutarou、Sekiguchi Yuichiro、Shibata Masaru、Taniguchi Keisuke
  • Journal Title: Physical Review D Volume: 97 Issue: 4 Pages: 044044-044044
  • DOI: 10.1103/physrevd.97.044044
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Axisymmetric force-free magnetosphere in the exterior of a neutron star - II. Maximum storage and open field energies (2018)
  • Author(s): Kojima Yasufumi , Okamoto Satoki
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 475 Issue: 4 Pages: 5290-5295
  • DOI: 10.1093/mnras/sty176
  • Peer Reviewed / Open Access
• [Journal Article] Neutrino transport in black hole-neutron star binaries: Neutrino emission and dynamical mass ejection (2018)
  • Author(s): Kyutoku Koutarou、Kiuchi Kenta、Sekiguchi Yuichiro、Shibata Masaru、Taniguchi Keisuke
  • Journal Title: Physical Review D Volume: 97 Issue: 2 Pages: 023009-023009
  • DOI: 10.1103/physrevd.97.023009
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Extracting the orbital axis from gravitational waves of precessing binary systems (2018)
  • Author(s): Kawaguchi Kyohei、Kyutoku Koutarou、Nakano Hiroyuki、Shibata Masaru
  • Journal Title: Physical Review D Volume: 97 Issue: 2 Pages: 024017-024017
  • DOI: 10.1103/physrevd.97.024017
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Optimal follow-up observations of gravitational wave events with small optical telescopes (2017)
  • Author(s): Narikawa Tatsuya , Kaneyama Masato , Tagoshi Hideyuki
  • Journal Title: Physical Review D Volume: 96 Issue: 8 Pages: 084067-084067
  • DOI: 10.1103/physrevd.96.084067
  • Peer Reviewed
• [Journal Article] Black hole ringdown echoes and howls (2017)
  • Author(s): Nakano Hiroyuki、Sago Norichika、Tagoshi Hideyuki、Tanaka Takahiro
  • Journal Title: Progress of Theoretical and Experimental Physics Volume: 2017 Issue: 7 Pages: 93-93
  • DOI: 10.1093/ptep/ptx093
  • NAID: 120006410705
  • Peer Reviewed / Open Access
• [Journal Article] Construction of KAGRA: an underground gravitational-wave observatory (2017)
  • Author(s): KAGRA Collaboration、ほか
  • Journal Title: Progress of Theoretical and Experimental Physics Volume: 2018 Issue: 1 Pages: 1-23
  • DOI: 10.1093/ptep/ptx180
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Sub-radian-accuracy gravitational waveforms of coalescing binary neutron stars in numerical relativity (2017)
  • Author(s): Kiuchi Kenta、Kawaguchi Kyohei、Kyutoku Koutarou、Sekiguchi Yuichiro、Shibata Masaru、Taniguchi Keisuke
  • Journal Title: Physical Review D Volume: 96 Issue: 8 Pages: 84060-84060
  • DOI: 10.1103/physrevd.96.084060
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Properties of Neutrino-driven Ejecta from the Remnant of a Binary Neutron Star Merger: Pure Radiation Hydrodynamics Case (2017)
  • Author(s): Fujibayashi Sho、Sekiguchi Yuichiro、Kiuchi Kenta、Shibata Masaru
  • Journal Title: The Astrophysical Journal Volume: 846 Issue: 2 Pages: 114-114
  • DOI: 10.3847/1538-4357/aa8039
  • Peer Reviewed
• [Journal Article] General relativistic viscous hydrodynamics of differentially rotating neutron stars (2017)
  • Author(s): M. Shibata, K. Kiuchi, and Y. Sekiguchi
  • Journal Title: Physical Review D Volume: 95 Issue: 8 Pages: 083005-083005
  • DOI: 10.1103/physrevd.95.083005
  • Peer Reviewed
• [Journal Article] High-energy Neutrino Emission from Short Gamma-Ray Bursts: Prospects for Coincident Detection with Gravitational Waves (2017)
  • Author(s): Kimura Shigeo S. , Murase Kohta , Meszaros Peter , Kiuchi Kenta
  • Journal Title: The Astrophysical Journal Volume: 848 Issue: 1 Pages: L4-L4
  • DOI: 10.3847/2041-8213/aa8d14
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Modeling GW170817 based on numerical relativity and its implications (2017)
  • Author(s): Shibata Masaru、Fujibayashi Sho、Hotokezaka Kenta、Kiuchi Kenta、Kyutoku Koutarou、Sekiguchi Yuichiro、Tanaka Masaomi
  • Journal Title: Physical Review D Volume: 96 Issue: 12 Pages: 123012-123012
  • DOI: 10.1103/physrevd.96.123012
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Gravitational waves from remnant massive neutron stars of binary neutron star merger: Viscous hydrodynamics effects (2017)
  • Author(s): Shibata Masaru , Kiuchi Kenta
  • Journal Title: Physical Review D Volume: 95 Issue: 12 Pages: 123003-123003
  • DOI: 10.1103/physrevd.95.123003
  • Peer Reviewed
• [Journal Article] Gravitational-wave cosmography with LISA and the Hubble tension (2017)
  • Author(s): Kyutoku Koutarou、Seto Naoki
  • Journal Title: Physical Review D Volume: 95 Issue: 8 Pages: 3525-3525
  • DOI: 10.1103/physrevd.95.083525
  • Peer Reviewed
• [Journal Article] Forecasting Tidal Disruption Events for Binary Black Holes with an Outer Tertiary (2017)
  • Author(s): Naoki Seto and Koutarou Kyutoku
  • Journal Title: Phys. Rev. Lett. Volume: 118 Issue: 15 Pages: 1101-1101
  • DOI: 10.1103/physrevlett.118.151101
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Summary of B01 group: Physics and Astrophysics with gravitational waves from Binary Neutron star Coalescences, Black Hole Neutron star Coalescences, Pulsars and Magnetars (2021)
  • Author(s): 田越秀行
  • Organizer: Gravitational wave physics and astronomy: Genesis: The fourth Annual Area Symposium
  • Int'l Joint Research
• [Presentation] 連星中性子星からの放出物質の長期進化とキロノヴァ (2021)
  • Author(s): 川口恭平
  • Organizer: 日本天文学会2021年春季年会
• [Presentation] Search for anisotropic gravitational-wave backgrounds using folded data (2021)
  • Author(s): Jishnu Suresh
  • Organizer: Gravitational wave physics and astronomy: Genesis: The fourth Annual Area Symposium
  • Int'l Joint Research
• [Presentation] 連星合体重力波の潮汐変形効果の推定によるコンパクト天体の研究 (2021)
  • Author(s): 成川達也
  • Organizer: 日本物理学会 第７６回年次大会
• [Presentation] Introduction of KAGRA Data Analysis Working Group and Science for O4 and beyond (2020)
  • Author(s): 田越秀行
  • Organizer: 7th KAGRA International Workshop
  • Int'l Joint Research
• [Presentation] 中性子星連星合体からの重力波と電磁波対応天体 (2020)
  • Author(s): 川口恭平
  • Organizer: 日本物理学会第75回年次大会
  • Invited
• [Presentation] PyStoch: Stochastic Gravitational Wave Background searches (2020)
  • Author(s): Jishnu Suresh
  • Organizer: Online JGRG workshop 2020
  • Int'l Joint Research
• [Presentation] PyStoch and Spherical Harmonic Search (2020)
  • Author(s): Jishnu Suresh
  • Organizer: LVK collaboartion meeitng
  • Int'l Joint Research
• [Presentation] Status of GstLAL O3GK all-sky CBC search (2020)
  • Author(s): 上野昂
  • Organizer: The 25th KAGRA Face-to-Face meeting
  • Int'l Joint Research
• [Presentation] Current status of GstLAL O3GK all-sky CBC search (2020)
  • Author(s): 上野昂
  • Organizer: The 26th KAGRA Face-to-Face meeting
  • Int'l Joint Research
• [Presentation] Current status of GstLAL O3GK all-sky CBC search (2020)
  • Author(s): 上野昂
  • Organizer: September, 2020 LVK Collaboration Meeting
  • Int'l Joint Research
• [Presentation] Current status of GstLAL O3GK all-sky CBC search (2) (2020)
  • Author(s): 上野昂
  • Organizer: March, 2021 LVK Collaboration Meeting
  • Int'l Joint Research
• [Presentation] コンパクト連星重力波の潮汐変形率の推定における付加的効果 (2020)
  • Author(s): 成川達也
  • Organizer: 日本物理学会 秋季大会
• [Presentation] スーパースピナーからの重力波解析 (2020)
  • Author(s): 内潟那美
  • Organizer: 日本物理学会秋季分科会
• [Presentation] 重力波探索における極値分布を用いたイベントの有意度推定 (2020)
  • Author(s): 譲原浩貴
  • Organizer: 日本物理学会 2020年秋季大会
• [Presentation] Background estimation on gravitational wave search by using extreme value distribution (2020)
  • Author(s): 譲原浩貴
  • Organizer: Gravitational wave physics and astronomy: Genesis: The fourth Annual Area Symposium
  • Int'l Joint Research
• [Presentation] Reanalysis of binary neutron star merger GW170817 using numerical-relativity calibrated waveform models (2020)
  • Author(s): Tatsuya Narikawa
  • Organizer: Gravitational wave physics and astronomy: Genesis, First Area Symposium
  • Int'l Joint Research
• [Presentation] Component separation in Stochastic Gravitational Wave Background searches (2020)
  • Author(s): Jishnu Suresh
  • Organizer: GW Physics and Astronomy Symposium, Kobe
  • Int'l Joint Research
• [Presentation] Status of CBC Detection Pipeline GstLAL (2020)
  • Author(s): Koh Ueno
  • Organizer: Gravitational wave physics and astronomy: Genesis, Third Area Symposium
  • Int'l Joint Research
• [Presentation] 数値相対論波形を用いたGW170817の解析 (2019)
  • Author(s): 成川達也
  • Organizer: 日本物理学会秋季分科会
• [Presentation] Analysis of the binary neutron star merger GW170817 using numerical-relativity calibrated waveforms (2019)
  • Author(s): Tatsuya Narikawa
  • Organizer: GWPAW 2019
• [Presentation] Analysis of the binary neutron star merger GW170817 using numerical-relativity calibrated waveforms (2019)
  • Author(s): Tatsuya Narikawa
  • Organizer: Multi-Messenger Astrophysics in the Gravitational Wave Era
  • Int'l Joint Research
• [Presentation] PyStoch: an efficient technique to probe stochastic gravitational wave background anisotropy with ground-based detectors (2019)
  • Author(s): Jishnu Suresh
  • Organizer: GR22, Amaldi
  • Int'l Joint Research
• [Presentation] Stochastic Gravitational Wave Background Anisotropy (2019)
  • Author(s): Jishnu Suresh
  • Organizer: GENESIS are workshop, Osaka
• [Presentation] Mapmaking using regularized deconvolution (2019)
  • Author(s): Jishnu Suresh
  • Organizer: TAUP, Toyama
  • Int'l Joint Research
• [Presentation] Stochastic Gravitational Wave Background map making techniques (2019)
  • Author(s): Jishnu Suresh
  • Organizer: GWPAW, Tokyo
  • Int'l Joint Research
• [Presentation] Status of CBC Detection Pipeline GstLAL (2019)
  • Author(s): Koh Ueno
  • Organizer: 24th KAGRA face-to-face meeting
  • Int'l Joint Research
• [Presentation] 輻射輸送計算に基づいたGW170817の放出物質のパラメータ推定 (2019)
  • Author(s): 川口恭平
  • Organizer: 天文学会2019年春季大会
• [Presentation] キロノヴァの多様性と輻射輸送計算によるその光度曲線の予測 (2019)
  • Author(s): 川口恭平
  • Organizer: 天文学会2019年秋季大会
• [Presentation] 中性子星連星合体からの重力波と電磁波対応天体 (2019)
  • Author(s): 川口恭平
  • Organizer: Workshop to bring together experts on High Energy Astrophysics from Japan and Israel
  • Invited
• [Presentation] Diversity of kilonova lightcurves (2019)
  • Author(s): Kyohei Kawaguchi
  • Organizer: Multi-Messenger Astrophysics in the Gravitational Wave Era
  • Int'l Joint Research / Invited
• [Presentation] On possible diversity of kilonova lightcurves (2019)
  • Author(s): Kyohei Kawaguchi
  • Organizer: Workshop to bring together experts on High Energy Astrophysics from Japan and Israel
  • Int'l Joint Research / Invited
• [Presentation] A nonparametric method to assess significance in search for compact binary coalescences with false discovery rate (2019)
  • Author(s): Hirotaka Yuzurihara
  • Organizer: Gravitational Wave Physics and Astronomy Workshop 2019 (GWPAW2019)
  • Int'l Joint Research
• [Presentation] A nonparametric method to evaluate significance of events in search for gravitational waves with false discovery rate (2019)
  • Author(s): Hirotaka Yuzurihara
  • Organizer: The International Conference on Topics in Astroparticle and Underground Physics (TAUP)
  • Int'l Joint Research
• [Presentation] Overview of KAGRA Data Analysis (2019)
  • Author(s): Hideyuki Tagoshi
  • Organizer: 16th International Conference on Topics in Astroparticle and Underground Physics
  • Int'l Joint Research
• [Presentation] Status of KAGRA Data Analysis Working Group (2019)
  • Author(s): Hideyuki Tagoshi
  • Organizer: The 6th KAGRA International workshop
  • Int'l Joint Research
• [Presentation] GW170817の再解析 (2019)
  • Author(s): 成川達也
  • Organizer: 日本物理学会 第74回年次大会
• [Presentation] Discrepancy in tidal deformability of GW170817 between the Advanced LIGO twins (2019)
  • Author(s): 成川達也
  • Organizer: 第三回 若手による重力・宇宙論研究会
• [Presentation] Discrepancy in tidal deformability of GW170817 between the Advanced LIGO twins (2019)
  • Author(s): Tatsuya Narikawa
  • Organizer: 2019 YITP Asian-Pacific Winter School and Workshop on Gravitation and Cosmology
  • Int'l Joint Research
• [Presentation] Frontiers in Numerical Relativity (2019)
  • Author(s): Kiuchi Kenta
  • Organizer: 2019 YITP Asia-Pacific Winter School and Workshop on Gravitation and Cosmology
  • Int'l Joint Research / Invited
• [Presentation] Estimation of background distribution in gravitational wave search (2019)
  • Author(s): Hirotaka Yuzurihara
  • Organizer: The 5th KAGRA International Workshop
  • Int'l Joint Research
• [Presentation] 重力波イベント探索のバックグランド推定方法 (2019)
  • Author(s): 譲原浩貴
  • Organizer: 日本物理学会 第74回年次大会
• [Presentation] Reanalysis of GW170817 (2018)
  • Author(s): Tatsuya Narikawa
  • Organizer: Innovative Area Gravitational Wave Physics and Astronomy: Genesis, The second Annual Area Symposium
  • Int'l Joint Research
• [Presentation] Reanalysis of GW170817 (2018)
  • Author(s): Tatsuya Narikawa
  • Organizer: The 28th Workshop on General Relativity and Gravitation in Japan (JGRG28)
  • Int'l Joint Research
• [Presentation] Introduction to a numerical modeling of binary neutron star mergers (2018)
  • Author(s): Kiuchi Kenta
  • Organizer: Workshop/School on Recent Developments in Gravitational Waves and Astrophysics
  • Int'l Joint Research / Invited
• [Presentation] Binary Neutron Star Merger (2018)
  • Author(s): Kiuchi Kenta
  • Organizer: Workshop on Jet and Shock breakout in Cosmic transient
  • Int'l Joint Research / Invited
• [Presentation] 重力波と電磁波で探る核密度状態方程式 (2018)
  • Author(s): Kiuchi Kenta
  • Organizer: Workshop on r-Process and Unstable Nuclei in Multi-messenger Astronomy
  • Invited
• [Presentation] Compact Binary Coalescence analysis in bKAGRA phase-1 (2018)
  • Author(s): Hirotaka Yuzurihara
  • Organizer: The 4th KAGRA International Workshop
  • Int'l Joint Research
• [Presentation] bKAGRA phase-1 における コンパクト連星合体重力波解析 (2018)
  • Author(s): 譲原浩貴
  • Organizer: 日本物理学会 2018年秋季大会
• [Presentation] bKAGRA phase-1 operation (2018)
  • Author(s): Hirotaka Yuzurihara
  • Organizer: Gravitational wave physics and astronomy: Genesis, First Area Symposium
• [Presentation] KAGALIの開発状況 (2018)
  • Author(s): 譲原浩貴
  • Organizer: Gravitational wave physics and astronomy: Genesis, A01-B01-C01 合同合宿
• [Presentation] 重力波探索における一般極値分布の適用 (2018)
  • Author(s): 譲原浩貴
  • Organizer: 共同研究集会 極値理論の工学への適用
• [Presentation] Commissioning tools for KAGRA detector (2018)
  • Author(s): Hirotaka Yuzurihara
  • Organizer: Gravitational wave physics and astronomy: Genesis, Second Area Symposium
• [Presentation] O2 folded data set, PyStoch and O3 plans (2018)
  • Author(s): Jishnu Suresh
  • Organizer: LIGO-Virgo Collaboration meeting, Maastricht.
  • Int'l Joint Research
• [Presentation] Stochastic analysis using PyStoch (2018)
  • Author(s): Jishnu Suresh
  • Organizer: Physics and Astrophysics at the eXtreme (PAX) meeting, Pune, India
  • Int'l Joint Research
• [Presentation] B01 report - Physics and Astrophysics with gravitational waves from Binary Neutron star Coalescences, Black Hole Neutron star Coalescences, Pulsars and Magnetars - (2018)
  • Author(s): 田越秀行
  • Organizer: The first annual symposium of the innovative area "Gravitational Wave Physics and Astronomy: Genesis"
  • Int'l Joint Research
• [Presentation] Remaining issues about compact binary coalescences (2018)
  • Author(s): 久徳浩太郎
  • Organizer: 初代星・初代銀河研究会2017 (広島市・呉市)
  • Invited
• [Presentation] 重力波天文学の現状と将来展望 (2018)
  • Author(s): 久徳浩太郎
  • Organizer: 第二回 若手による重力・宇宙論研究会 (京都府・京都市)
  • Invited
• [Presentation] 連星中性子星合体からの熱的ニュートリノの検出可能性 (2018)
  • Author(s): 久徳浩太郎
  • Organizer: 日本物理学会第73回年次大会 (千葉県・野田市)
• [Presentation] Introduction to a numerical modeling of binary neutron star mergers (2018)
  • Author(s): 木内建太
  • Organizer: Workshop/School on Recent Developments in Gravitational Waves and Astrophysics “
  • Int'l Joint Research / Invited
• [Presentation] Gravitational waves and electromagnetic signals from a binary neutron star merger GW170817 (2018)
  • Author(s): 木内建太
  • Organizer: Innovative area workshop “Why does the Universe accelerate? - Exhaustive study and challenge for the future”
  • Invited
• [Presentation] Search for gravitational waves from coalescencing compact binaries (2017)
  • Author(s): 田越秀行
  • Organizer: Symposium on "New development in astrophysics through multi-messenger observations of gravitational wave sources"
  • Int'l Joint Research
• [Presentation] Status and prospect of KAGRA (2017)
  • Author(s): 田越秀行
  • Organizer: The 27th Workshop on General Relativity and Gravitation in Japan
  • Int'l Joint Research / Invited
• [Presentation] Initial data of numerical relativity/Electromagnetic counterparts to compact binary mergers (2017)
  • Author(s): Koutarou Kyutoku
  • Organizer: Spring School on Numerical Relativity and Gravitational-Wave Physics, Beijing (China)
  • Int'l Joint Research / Invited
• [Presentation] Numerical-relativity simulations of neutron-star binary mergers (2017)
  • Author(s): Koutarou Kyutoku
  • Organizer: The Physics of Extreme-Gravity Stars, Stockholm (Sweden)
  • Int'l Joint Research / Invited
• [Presentation] Gravitational-wave cosmography with LISA and the Hubble tension (2017)
  • Author(s): Koutarou Kyutoku
  • Organizer: The Physics of Extreme-Gravity Stars, Stockholm (Sweden)
  • Int'l Joint Research
• [Presentation] コンパクト連星合体からのニュートリノ放射 (2017)
  • Author(s): 久徳浩太郎
  • Organizer: 相対論宇宙論 東北研究会 2017 (宮城県・仙台市)
• [Presentation] GW170817 (2017)
  • Author(s): 久徳浩太郎
  • Organizer: 理論天文学研究会2017 (岩手県・水沢市)
  • Invited
• [Presentation] GW170817/GRB 170817A (2017)
  • Author(s): 久徳浩太郎
  • Organizer: 高エネルギーガンマ線で見る極限宇宙2017 (千葉県・柏市）
  • Invited
• [Presentation] GW170817 (2017)
  • Author(s): 久徳浩太郎
  • Organizer: 第30回理論懇シンポジウム (東京都・文京区)
  • Invited
• [Presentation] Magnetic energy stored in relativistic force-free magnetosphere (2017)
  • Author(s): 小嶌康史
  • Organizer: Physics of Neutron Stars 2017
  • Int'l Joint Research
• [Presentation] High precision gravitational wave from binary neutron star mergers (2017)
  • Author(s): 木内建太
  • Organizer: Nuclear Astrophysics in the Gravitational Wave Astronomy Era
  • Int'l Joint Research / Invited
• [Presentation] Numerical modeling of binary neutron star mergers (2017)
  • Author(s): 木内建太
  • Organizer: Hot topics in General Relativity and Gravitation 3
  • Int'l Joint Research / Invited
• [Presentation] Introduction to numerical relativity of compact binary mergers (2017)
  • Author(s): 木内建太
  • Organizer: Asian-Pacific School and Workshop on Gravitational and Cosmology at CUHK
  • Int'l Joint Research / Invited
• [Presentation] Numerical modeling of a central engine of short gamma-ray bursts (2017)
  • Author(s): 木内建太
  • Organizer: Innovation of research of gamma-ray burst,
  • Invited
• [Presentation] Numerical modeling of binary neutron star mergers and gravitational waves (2017)
  • Author(s): 木内建太
  • Organizer: The 25th Anniversary Memorial Symposium of CCS, Univ. Tsukuba “Progress and Future of Computational Sciences”, Tsukuba International Congress Center, Tsukuba
  • Invited
• [Remarks] 重力波創世記
  • URL: https://gw-genesis.scphys.kyoto-u.ac.jp/
• [Remarks] 東京大学宇宙線研究所 重力波グループ
  • URL: http://www.icrr.u-tokyo.ac.jp/gr/GWPOHP/index.html
• [Remarks] 宇宙線研究所・重力波グループ
  • URL: http://www.icrr.u-tokyo.ac.jp/gr/GWPOHP/index.html