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arXiv 1105.1845astro-ph.COgr-qc
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大质量黑洞双星的共振俘获

Resonant Trapping of Stars by Merging Massive Black Hole Binaries

Naoki Seto, Takayuki Muto

摘要:

一个巨大的黑洞双星可能会共振地捕获一颗恒星(例如白矮星),其潮汐破裂释放的气体可能会在双星合并的周围发出电磁波信号。利用包含引力辐射反应的后牛顿运动方程,数值研究了质量比为1/100的黑洞双星的共振俘获。研究发现,双星的2:1(同时4:2)平均运动共振会很强,原则上可以将小的第三个天体拉入相对论范围(例如~10史瓦西半径)。被困物体的倾角可能会显著增加,在某些情况下,最终可能会实现逆行轨道。

英文摘要:

A massive black hole binary might resonantly trap a star (e.g. a white dwarf) and the gas released by its tidal disruption might emit electromagnetic wave signals around the coalescence of the binary. With post-Newtonian equations of motion including gravitational radiation reaction, we numerically studied resonant trappings by black hole binaries with mass ratio 1/100. It is found that 2:1 (and simultaneously 4:2) mean motion resonances of the binaries would be strong and could, in principle, draw small third objects deep into relativistic regimes (e.g. ~10 Schwarzschild radii). The inclinations of the trapped objects could increase significantly and, in some cases, retrograde orbits could be realized eventually.

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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