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arXiv 0907.0280gr-qc
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二元黑洞合并的最后残余:多极分析

The Final Remnant of Binary Black Hole Mergers: Multipolar Analysis

Robert Owen

摘要:

方法来定义和计算源多极的动力学视野的数值相对论代码,扩展以前的工作从孤立的和动力学的地平线形式主义的方式,允许考虑的视野是不轴对称的。这些方法,然后应用到一个二元黑洞合并模拟,提供证据表明,最终的残余物是一个克尔黑洞,无论是通过(空间)规范不变的恢复的几何形状的视视界,并通过一个详细的提取准正规振铃模式直接从强场区域。

英文摘要:

Methods are presented to define and compute source multipoles of dynamical horizons in numerical relativity codes, extending previous work from the isolated and dynamical horizon formalisms in a manner that allows for the consideration of horizons that are not axisymmetric. These methods are then applied to a binary black hole merger simulation, providing evidence that the final remnant is a Kerr black hole, both through the (spatially) gauge-invariant recovery of the geometry of the apparent horizon, and through a detailed extraction of quasinormal ringing modes directly from the strong-field region.

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