Dissipation in extreme mass-ratio binaries with a spinning secondary
Dissipation in extreme mass-ratio binaries with a spinning secondary
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具有旋转次级的极端质量比双星中的耗散
DOI:
10.1103/physrevd.102.064013
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发表时间:
2020
影响因子:
5
通讯作者:
Akcay S
中科院分区:
文献类型:
--
作者:
Akcay S
We present the gravitational-wave flux balance law in an extreme mass-ratio binary with a spinning secondary. This law relates the flux of energy (angular momentum) radiated to null infinity and through the event horizon to the local change in the secondary’s orbital energy (angular momentum) for generic, nonresonant bound orbits in Kerr spacetime. As an explicit example we compute these quantities for a spin-aligned body moving on a circular orbit around a Schwarzschild black hole. We perform this calculation both analytically, via a high-order post-Newtonian expansion, and numerically in two different gauges. Using these results we demonstrate explicitly that our new balance law holds.
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