| 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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| 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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