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arXiv 0801.2911astro-phgr-qc
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BH-NS聚并双星潮汐相互作用的半相对论模型

A Semi-relativistic Model for Tidal Interactions in BH-NS Coalescing Binaries

V. Ferrari, L. Gualtieri, F. Pannarale

摘要:

本文用半解析方法研究了黑洞-中子星双星系统中Kerr黑洞对中子星的潮汐效应。采用由相对论恒星结构方程导出的标量势,考虑了相对论效应对中子星自引力的影响。我们计算了黑洞-中子星双星的准平衡序列,以及恒星被黑洞潮汐场破坏的临界轨道间距:后者的量特别令人感兴趣,因为当它大于最里面的稳定圆形轨道的半径时,可能会产生短的伽马射线暴。

英文摘要:

We study the tidal effects of a Kerr black hole on a neutron star in black hole-neutron star binary systems using a semi-analytical approach which describes the neutron star as a deformable ellipsoid. Relativistic effects on the neutron star self-gravity are taken into account by employing a scalar potential resulting from relativistic stellar structure equations. We calculate quasi-equilibrium sequences of black hole-neutron star binaries, and the critical orbital separation at which the star is disrupted by the black hole tidal field: the latter quantity is of particular interest because when it is greater than the radius of the innermost stable circular orbit, a short gamma-ray burst scenario may develop.

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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