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arXiv 1504.02787astro-ph.SRastro-ph.GAastro-ph.HE
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星系核中的双潮汐破裂

Double tidal disruptions in galactic nuclei

Ilya Mandel, Yuri Levin

备注：
Published version; minor revisions
发表信息：
ApJ Letters, 805, 1, L4 (2015)
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摘要：

一颗接近大质量黑洞（MBH）的近径向轨道上的恒星，如果足够接近MBH，就会受到潮汐干扰。在这里，我们将探讨发生了什么双星的质量中心接近MBH近径向轨道。与MBH的相互作用经常导致两颗恒星的顺序被打乱。我们认为，这样的事件可能产生的光变曲线是从那些单一的中断，如两个局部极大值可能的功能有很大的不同。来自MBH的潮汐力也可以导致双星的碰撞;这些合并的产物可以形成高度磁化的恒星，其随后的潮汐破坏可能使喷流迅速形成。

英文摘要：

A star on a nearly radial trajectory approaching a massive black hole (MBH) gets tidally disrupted if it comes sufficiently close to the MBH. Here we explore what happens to binary stars whose centers of mass approach the MBH on nearly radial orbits. The interaction with the MBH often leads to both stars being disrupted in sequence. We argue that such events could produce light curves that are substantially different from those of the single disruptions, with possible features such as two local maxima. Tidal forces from the MBH can also lead the binary components to collide; these merger products can form highly magnetized stars, whose subsequent tidal disruption may enable prompt jet formation.

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