Reducing orbital eccentricity in initial data of black hole-neutron star binaries toward computations of accurate gravitational waveforms
| Project/Area Number |
15H06857
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | High Energy Accelerator Research Organization (2016)
Institute of Physical and Chemical Research (2015) |
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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)
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| Project Period (FY) |
2015-08-28 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| 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)
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| 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 |
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| 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.
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Report
(3 results)
Research Products
(32 results)
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[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
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Journal Title
Physical Review Letters
Volume: 116
Issue: 18
Pages: 181101-181101
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[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
Invited
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