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arXiv 1104.0387gr-qc
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黑洞双星内旋反冲的系统学与慢度近似

Systematics of black hole binary inspiral kicks and the slowness approximation

Richard H. Price, Gaurav Khanna, Scott A. Hughes

摘要:

在黑洞的螺旋和合并过程中,引力波多极的相互作用带走了线性动量,从而提供了一个天体物理学上重要的反冲,或“踢”到系统和最后的黑洞遗迹。已经发现,在坍缩的最后阶段(准正规振铃)的线性动量倾向于提供一个“反反冲”,在某些情况下,几乎取消了所有的早期(准圆内旋)发射的反冲。我们在这里表明,这种抵消不是由于特殊的引力波,黑洞,或相互作用的多极,而只是一个事实,即旋转通量的动量改变其强度缓慢。我们还表明,了解系统的排放允许很好的估计的净踢数值模拟开始在相当晚的时间,是有用的定性了解什么样的系统提供大,小净踢。

英文摘要:

During the inspiral and merger of black holes, the interaction of gravitational wave multipoles carries linear momentum away, thereby providing an astrophysically important recoil, or "kick" to the system and to the final black hole remnant. It has been found that linear momentum during the last stage (quasinormal ringing) of the collapse tends to provide an "antikick" that in some cases cancels almost all the kick from the earlier (quasicircular inspiral) emission. We show here that this cancellation is not due to peculiarities of gravitational waves, black holes, or interacting multipoles, but simply to the fact that the rotating flux of momentum changes its intensity slowly. We show furthermore that an understanding of the systematics of the emission allows good estimates of the net kick for numerical simulations started at fairly late times, and is useful for understanding qualitatively what kinds of systems provide large and small net kicks.

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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