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arXiv 1608.01033gr-qcastro-ph.GAastro-ph.HE
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自旋进动黑洞双星时空的渐近匹配

Spinning, Precessing, Black Hole Binary Spacetime via Asymptotic Matching

Hiroyuki Nakano, Brennan Ireland, Manuela Campanelli, Eric J. West

摘要:

我们简要地讨论了一种方法来构建一个整体的,解析的,近似的时空进动,旋转的双黑洞。时空结构被分为三个部分:内区是靠近每个黑洞的时空,用扰动Kerr解近似;近区是远离两个黑洞的时空,用后牛顿度规描述;波(远)区是需要考虑延迟效应的区域,用后闵可夫斯基度规很好地模拟。这些独立的时空然后缝合在一起使用渐近匹配技术,以获得一个全球性的解决方案,近似满足爱因斯坦场方程。根据进动运动方程,通过旋转黑洞的自旋方向引入进动效应,其方式与全球时空结构一致。

英文摘要:

We briefly discuss a method to construct a global, analytic, approximate spacetime for precessing, spinning binary black holes. The spacetime construction is broken into three parts: the inner zones are the spacetimes close to each black hole, and are approximated by perturbed Kerr solutions; the near zone is far from the two black holes, and described by the post-Newtonian metric; and finally the wave (far) zone, where retardation effects need to be taken into account, is well modeled by the post-Minkowskian metric. These individual spacetimes are then stitched together using asymptotic matching techniques to obtain a global solution that approximately satisfies the Einstein field equations. Precession effects are introduced by rotating the black hole spin direction according to the precessing equations of motion, in a way that is consistent with the global spacetime construction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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