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Reducing orbital eccentricity in initial data of black hole-neutron star binaries toward computations of accurate gravitational waveforms

Research Project

Project/Area Number 15H06857
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionHigh Energy Accelerator Research Organization (2016)
Institute of Physical and Chemical Research (2015)

Principal Investigator

Kyutoku Koutarou  大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 助教 (30757125)

Project Period (FY) 2015-08-28 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords重力波 / 一般相対論 / ブラックホール / 中性子星 / 初期値問題 / 宇宙物理 / 相対論
Outline of Final Research Achievements

LIGO (US) and KAGRA (Japan) will detect gravitational waves from merging black hole-neutron star binaries in the near future. Gravitational waves from them will enable us to know neutron star radii and the equation of state of high-density matter composing the neutron star. In this study, we develop a method to prepare initial conditions of circular black hole-neutron star binaries, which are necessary for numerical simulations to derive accurate gravitational waveforms to be compared with observed data. We successfully reduce the residual eccentricity to the 0.1% level for all of the cases we have tried so far with various parameters of binaries.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Annual Research Report
  • Research Products

    (32 results)

All 2017 2016 2015

All Journal Article (11 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 11 results,  Acknowledgement Compliant: 8 results,  Open Access: 2 results) Presentation (21 results) (of which Int'l Joint Research: 5 results,  Invited: 4 results)

  • [Journal Article] Effects of neutron-star dynamic tides on gravitational waveforms within the effective-one-body approach2016

    • Author(s)
      Tanja Hinderer, Andrea Taracchini, Francois Foucart, Alessandra Buonanno, Jan Steinhoff, Matthew Duez, Lawrence E. Kidder, Harald P. Pfeiffer, Mark A. Scheel, Bela Szilagyi, Kenta Hotokezaka, Koutarou Kyutoku, Masaru Shibata, Cory W. Carpenter
    • Journal Title

      Physical Review Letters

      Volume: 116 Issue: 18 Pages: 181101-181101

    • DOI

      10.1103/physrevlett.116.181101

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dynamical mass ejection from the merger of asymmetric binary neutron stars: Radiation-hydrodynamics study in general relativity2016

    • Author(s)
      Yuichiro Sekiguchi, Kenta Kiuchi, Koutarou Kyutoku, Masaru Shibata, and Keisuke Taniguchi
    • Journal Title

      Physical Review D

      Volume: 93 Issue: 12 Pages: 124046-124046

    • DOI

      10.1103/physrevd.93.124046

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Models of Kilonova/macronova emission from black hole-neutron star mergers2016

    • Author(s)
      K. Kawaguchi, K. Kyutoku, M. Shibata, and M. Tanaka
    • Journal Title

      Astrophysical Journal

      Volume: 825 Issue: 1 Pages: 52-52

    • DOI

      10.3847/0004-637x/825/1/52

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] The Unreasonable Weakness of R-process Cosmic Rays in the Neutron-star-merger Nucleosynthesis Scenario2016

    • Author(s)
      Kyutoku, Koutarou; Ioka, Kunihito
    • Journal Title

      The Astrophysical Journal

      Volume: 827 Issue: 1 Pages: 83-83

    • DOI

      10.3847/0004-637x/827/1/83

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Concise estimate of the expected number of detections for stellar-mass binary black holes by eLISA2016

    • Author(s)
      Koutarou Kyutoku, Naoki Seto
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 462 Issue: 2 Pages: 2177-2183

    • DOI

      10.1093/mnras/stw1767

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Measurability of the tidal deformability by gravitational waves from coalescing binary neutron stars2016

    • Author(s)
      Kenta Hotokezaka, Koutarou Kyutoku, Yuichiro Sekiguchi, and Masaru Shibata
    • Journal Title

      Physical Review D

      Volume: 93 Issue: 6 Pages: 064082-064082

    • DOI

      10.1103/physrevd.93.064082

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Black hole-neutron star binary merger: Dependence on black hole spin orientation and equation of state2015

    • Author(s)
      K. Kawaguchi, K. Kyutoku, H. Nakano, H. Okawa, M. Shibata, and K. Taniguchi
    • Journal Title

      Physical Review D

      Volume: 92 Issue: 2 Pages: 024014-024014

    • DOI

      10.1103/physrevd.92.024014

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] High-resolution magnetohydrodynamics simulation of black hole-neutron star merger: Mass ejection and short gamma-ray burst2015

    • Author(s)
      Kenta Kiuchi, Yuichiro Sekiguchi, Koutarou Kyutoku, Masaru Shibata, Keisuke Taniguchi, and Tomohide Wade
    • Journal Title

      Physical Review D

      Volume: 92 Issue: 6 Pages: 064034-064034

    • DOI

      10.1103/physrevd.92.064034

    • NAID

      120005690189

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Aligned spin neutron star-black hole mergers: A gravitational waveform amplitude model2015

    • Author(s)
      Francesco Pannarale, Emanuele Berti, Koutarou Kyutoku, Benjamin D. Lackey, Masaru Shibata
    • Journal Title

      Physical Review D

      Volume: 92 Issue: 8 Pages: 084050-084050

    • DOI

      10.1103/physrevd.92.084050

    • NAID

      120005690188

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Gravitational-wave cutoff frequencies of tidally disruptive neutron star-black hole binary mergers2015

    • Author(s)
      Francesco Pannarale, Emanuele Berti, Koutarou Kyutoku, Benjamin D. Lackey, Masaru Shibata
    • Journal Title

      Physical Review D

      Volume: 92 Issue: 8 Pages: 081504-081504

    • DOI

      10.1103/physrevd.92.081504

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Efficient magnetic-field amplification due to the Kelvin-Helmholtz instability in binary neutron star mergers2015

    • Author(s)
      Kenta Kiuchi, Pablo Cerda-Duran, Koutarou Kyutoku, Yuichiro Sekiguchi, Masaru Shibata
    • Journal Title

      Physical Review D

      Volume: 92 Issue: 12 Pages: 124034-124034

    • DOI

      10.1103/physrevd.92.124034

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] 重力波天文学と電磁波対応天体2017

    • Author(s)
      久徳浩太郎
    • Organizer
      2016年度CRC将来計画タウンミーティング
    • Place of Presentation
      東京大学(千葉、柏)
    • Year and Date
      2017-03-24
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] eLISAによる重力波コスモグラフィーとHubbleパラメータ問題2017

    • Author(s)
      久徳浩太郎
    • Organizer
      日本物理学会第72回年次大会
    • Place of Presentation
      大阪大学(大阪、大阪)
    • Year and Date
      2017-03-18
    • Related Report
      2016 Annual Research Report
  • [Presentation] ブラックホール・中性子星連星合体におけるニュートリノの放射と輸送2017

    • Author(s)
      久徳浩太郎
    • Organizer
      連星中性子星・ブラックホールを含む重力波源の電磁波対応天体
    • Place of Presentation
      京都大学(京都、京都)
    • Year and Date
      2017-03-08
    • Related Report
      2016 Annual Research Report
  • [Presentation] Numerical-relativity simulations of neutron-star binary mergers2016

    • Author(s)
      Koutarou Kyutoku
    • Organizer
      Gravitational-Wave Astrophysics in the High Event Rate Regime
    • Place of Presentation
      東京大学(東京、文京区)
    • Year and Date
      2016-12-06
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] eLISAによる重力波コスモグラフィーとHubbleパラメータ問題2016

    • Author(s)
      久徳浩太郎
    • Organizer
      第5回観測的宇宙論ワークショップ
    • Place of Presentation
      広島大学(広島、東広島)
    • Year and Date
      2016-11-26
    • Related Report
      2016 Annual Research Report
  • [Presentation] Dynamical mass ejection from black hole-neutron star binaries2016

    • Author(s)
      Koutarou Kyutoku
    • Organizer
      Compact Star Mergers and Nucleosynthesis
    • Place of Presentation
      京都大学(京都、京都)
    • Year and Date
      2016-11-08
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Neutrino transport in black hole-neutron star binaries: dynamical mass ejection and neutrino-driven wind2016

    • Author(s)
      Koutarou Kyutoku
    • Organizer
      8th Huntsville Gamma-Ray Burst Symposium
    • Place of Presentation
      Huntsville (United States of America)
    • Year and Date
      2016-10-26
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ブラックホール・中性子星連星からのマルチメッセンジャー2016

    • Author(s)
      久徳浩太郎
    • Organizer
      コンパクト天体における高エネルギー現象
    • Place of Presentation
      東京大学(千葉、柏)
    • Year and Date
      2016-10-11
    • Related Report
      2016 Annual Research Report
  • [Presentation] The unreasonable weakness of r-process cosmic rays in the neutron-star-merger nucleosynthesis scenario2016

    • Author(s)
      久徳浩太郎
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      宮崎大学(宮崎、宮崎)
    • Year and Date
      2016-09-23
    • Related Report
      2016 Annual Research Report
  • [Presentation] eLISAによるGW150914類似イベントの検出可能性2016

    • Author(s)
      久徳浩太郎
    • Organizer
      日本天文学会2016年秋季年会
    • Place of Presentation
      愛媛大学(愛媛、松山)
    • Year and Date
      2016-09-15
    • Related Report
      2016 Annual Research Report
  • [Presentation] 重力波天文学2016

    • Author(s)
      久徳浩太郎
    • Organizer
      熱場の量子論とその応用
    • Place of Presentation
      理化学研究所(埼玉、和光)
    • Year and Date
      2016-08-23
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 重力波天文学と今後の中性子星の性質への制限について2016

    • Author(s)
      久徳浩太郎
    • Organizer
      相対論宇宙論 弘前研究会 2016
    • Place of Presentation
      弘前大学(青森、弘前)
    • Year and Date
      2016-08-03
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] The unreasonable weakness of r-process cosmic rays in the neutron-star-merger nucleosynthesis scenario2016

    • Author(s)
      久徳浩太郎
    • Organizer
      RIKEN-RESCEU 合同勉強会 2016
    • Place of Presentation
      東京大学(東京、文京区)
    • Year and Date
      2016-07-27
    • Related Report
      2016 Annual Research Report
  • [Presentation] 磁気流体力学によるブラックホール・中性子星連星合体の数値相対論シミュレーション2016

    • Author(s)
      久徳浩太郎
    • Organizer
      理研シンポジウム「スーパーコンピュータHOKUSAIとShoubu、研究開発の最前線」
    • Place of Presentation
      理化学研究所(埼玉、和光)
    • Year and Date
      2016-06-08
    • Related Report
      2016 Annual Research Report
  • [Presentation] ニュートリノ輸送数値相対論によるブラックホール・中性子星連星の合体2016

    • Author(s)
      久徳浩太郎
    • Organizer
      日本物理学会第71会年次大会
    • Place of Presentation
      東北学院大学(宮城、仙台)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] Dynamical mass ejection from black hole-neutron star binaries2015

    • Author(s)
      Koutarou Kyutoku
    • Organizer
      28th Texas Symposium on Relativistic Astrophysics
    • Place of Presentation
      Geneva, Switzerland
    • Year and Date
      2015-12-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reducing orbital eccentricity in initial data of black hole-neutron star binaries in the puncture framework2015

    • Author(s)
      Koutarou Kyutoku
    • Organizer
      The 25th Workshop on General Relativity and Gravitation in Japan
    • Place of Presentation
      京都大学(京都、京都)
    • Year and Date
      2015-12-08
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamical mass ejection from black hole-neutron star binaries2015

    • Author(s)
      Koutarou Kyutoku
    • Organizer
      Quarks to Universe in Computationa Science
    • Place of Presentation
      奈良春日野国際フォーラム(奈良、奈良)
    • Year and Date
      2015-11-05
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamical mass ejection from black hole-neutron star binaries2015

    • Author(s)
      久徳浩太郎
    • Organizer
      High-Energy Astrophysics and Astroparticle Physics 2015
    • Place of Presentation
      高エネルギー加速器研究機構(茨城、つくば)
    • Year and Date
      2015-10-07
    • Related Report
      2015 Annual Research Report
  • [Presentation] ブラックホール・中性子星連星からの力学的質量放出2015

    • Author(s)
      久徳浩太郎
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      大阪市立大学(大阪、大阪)
    • Year and Date
      2015-09-25
    • Related Report
      2015 Annual Research Report
  • [Presentation] Compact binary progenitors of short-hard gamma-ray bursts2015

    • Author(s)
      久徳浩太郎
    • Organizer
      GRB Workshop 2015
    • Place of Presentation
      理化学研究所(埼玉、和光)
    • Year and Date
      2015-09-02
    • Related Report
      2015 Annual Research Report

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Published: 2015-08-26   Modified: 2018-03-22  

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