A numerical study of relativistic compact binaries in quasi-equilibrium
| Project/Area Number |
26400267
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | University of the Ryukyus (2015-2016)
The University of Tokyo (2014) |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 宇宙物理 / 一般相対論 / ブラックホール / 中性子星 / 連星系 / 準平衡解 / スペクトル法 / 数値計算 |
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| Outline of Final Research Achievements |
Compact binary systems gradually decrease their orbital separations and eventually merge due to the emission of gravitational waves. There, however, exists a state which can be regarded as quasi-equilibrium in the evolutionary sequence of the binaries, because the time-scale of the orbital decay is much longer than the orbital period. In this research program, we have developed a numerical code to accurately solve Poisson-like equations by using a spectral method. First, we developed a code to perform spectral expansion and confirmed its accuracy. Then, we implemented a numerical code to solve Poisson-like equations, an essential part to obtain quasi-equilibrium figures of compact binaries, using the bi-spherical coordinates.
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Report
(4 results)
Research Products
(7 results)
