Slowly rotating regular black holes with a charged thin shell
Slowly rotating regular black holes with a charged thin shell
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缓慢旋转的带有带电薄壳的规则黑洞
DOI：
10.1103/physrevd.90.064042
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发表时间：
2014
影响因子：
5
通讯作者：
Shijun
中科院分区：
文献类型：
--
作者：
Nami Uchikata;Nami; Yoshida;Shijun
我们获得了由类时带电薄壳内具有轴对称稳态扰动的de Sitter时空和壳外具有足够小旋转的Kerr-Newman几何构造的规则黑洞的旋转解。为了处理慢旋转薄壳，我们采用了de拉克鲁斯和Israel提出的方法。薄壳层被假定为由零旋转极限的尘埃组成，并且位于黑洞解的内视界内。我们扩展的扰动的权力的旋转参数的Kerr-Newman度量的二阶。结果表明，采用本文的处理方法，薄壳的应力张量一般具有各向异性压力，即，如果考虑旋转效应，则薄壳不能由尘埃组成。然而，薄壳可以由具有各向同性压力的理想流体组成，如果适当地使用两个不同时空的物理上可接受的匹配中出现的自由度。本文详细地数值研究了内方、吉田和二濑等人关于球对称带电规则黑洞的转动效应。
We obtain rotating solutions of regular black holes which are constructed of de Sitter spacetime with the axisymmetric stationary perturbation within the timelike charged thin shell and the Kerr-Newman geometry with sufficiently small rotation outside the shell. To treat the slowly rotating thin shell, we employ the method developed by de la Cruz and Israel. The thin shell is assumed to be composed of a dust in the zero-rotation limit and located inside the inner horizon of the black hole solution. We expand the perturbation in powers of the rotation parameter of the Kerr-Newman metric up to the second order. It is found that with the present treatment, the stress tensor of the thin shell in general has anisotropic pressure, i.e., the thin shell cannot be composed of a dust if the rotational effects are taken into account. However, the thin shell can be composed of a perfect fluid with isotropic pressure if the degrees of freedom appearing in the physically acceptable matching of the two distinct spacetimes are suitably used. We numerically investigate the rotational effects on the spherically symmetric charged regular black hole obtained by Uchikata, Yoshida, and Futamase in detail.