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arXiv 1003.3865astro-ph.HEgr-qc
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黑洞引力波反冲的一般公式

A General Formula for Black Hole Gravitational Wave Kicks

James R. van Meter, M. Coleman Miller, John G. Baker, William D. Boggs, Bernard J. Kelly

摘要:

虽然在合并黑洞的轨道平面中的引力波反冲速度已经被理解了一段时间,但对于占主导地位的平面外反冲,显然已经提出了相互矛盾的公式,每个公式都很好地适合不同的数据集。这一点很重要,因为只有面外反冲才能达到500 km/s以上,从而从星系中喷射出合并的残余物。使用一个不同的Anastrophic的平面外踢,我们表明,我们可以适应几乎所有现有的数据,以优于5%。这对于任何天体物理计算来说都足够好了,并且表明之前的明显冲突只是因为两个数据集探索了踢参数空间的不同方面。

英文摘要:

Although the gravitational wave kick velocity in the orbital plane of coalescing black holes has been understood for some time, apparently conflicting formulae have been proposed for the dominant out-of-plane kick, each a good fit to different data sets. This is important to resolve because it is only the out-of-plane kicks that can reach more than 500 km/s and can thus eject merged remnants from galaxies. Using a different ansatz for the out-of-plane kick, we show that we can fit almost all existing data to better than 5 %. This is good enough for any astrophysical calculation, and shows that the previous apparent conflict was only because the two data sets explored different aspects of the kick parameter space.

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