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arXiv 1802.02848gr-qcastro-ph.HE
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广义相对论旋转中的自引力轴对称圆盘

Self-gravitating axially symmetric disks in general-relativistic rotation

Janusz Karkowski, Wojciech Kulczycki, Patryk Mach, Edward Malec, Andrzej Odrzywolek, Michal Pirog

摘要:

我们整合数值轴对称稳态爱因斯坦方程描述自引力盘周围无自旋黑洞。数值方案是基于柴田开发的方法,但包含重要的新成分。我们导出了一个新的广义相对论开普勒旋转律的自引力盘周围的旋转黑洞。以前关于无自旋黑洞旋转的结果是在自旋参数为零的极限下出现的。这些旋转曲线可以用来描述旋转的恒星,经过适当的修改后,围绕对称轴。它们可以用来描述致密的环面--黑洞的构形,包括活动星系核或两颗中子星合并的产物。

英文摘要:

We integrate numerically axially symmetric stationary Einstein equations describing self-gravitating disks around spinless black holes. The numerical scheme is based on a method developed by Shibata, but contains important new ingredients. We derive a new general-relativistic Keplerian rotation law for self-gravitating disks around spinning black holes. Former results concerning rotation around spin-less black holes emerge in the limit of a vanishing spin parameter. These rotation curves might be used for the description of rotating stars, after appropriate modification around the symmetry axis. They can be applied to the description of compact torus--black hole configurations, including active galactic nuclei or products of coalescences of two neutron stars.

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