Resonant trapping of stars by merging massive black hole binaries
Resonant trapping of stars by merging massive black hole binaries
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DOI：
10.1111/j.1365-2966.2011.18988.x
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发表时间：
2011-05
影响因子：
4.8
通讯作者：
N. Seto;T. Muto
中科院分区：
文献类型：
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作者：
N. Seto;T. Muto
一个巨大的黑洞双星可能共振地捕获一颗星星（例如一颗白色矮星），而它的潮汐破裂释放的气体可能会在双星的合并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性区域（例如，100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。
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 a mass ratio of 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.