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arXiv 2211.04823gr-qc
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被薄盘包围的黑洞:完全相对论解

Black hole encircled by a thin disk: fully relativistic solution

Petr Kotlařík, David Kofroň

摘要:

本文给出了一个完整的度规,描述了无径向压力的静止轴对称薄圆盘围绕Schwarzschild黑洞的引力场。盘密度轮廓是天体物理学上真实的,从地平线延伸到径向无限远,但在这两个位置迅速下降。度量函数表示为勒让德多项式的有限级数。该解的主要优点是:(i)圆盘没有边,所以它们的场处处正则(在视界之外);(ii)所有非平凡度量函数都是解析地以封闭形式给出的。我们检查和说明的黑洞-磁盘时空的基本属性。

英文摘要:

We give a full metric describing the gravitational field of a static and axisymmetric thin disk without radial pressure encircling a Schwarzschild black hole. The disk density profiles are astrophysically realistic, stretching from the horizon to radial infinity, yet falling off quickly at both these locations. The metric functions are expressed as finite series of Legendre polynomials. Main advantages of the solution are that (i) the disks have no edges, so their fields are everywhere regular (outside the horizon), and that (ii) all non-trivial metric functions are provided analytically and in closed forms. We examine and illustrate basic properties of the black-hole -- disk space-times.

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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