论文标题
屏蔽一个带电的黑洞
Shielding a charged black hole
论文作者
论文摘要
我们描述了一个浸入涉及带电物质场的背景的带电黑洞的屏蔽机制，仅来自爱因斯坦 - 马克斯韦尔场方程。特别是，我们考虑了爱因斯坦簇的充电概括，这是一个带电的黑洞，周围是有效的部分充电尘埃云。我们表明，引起的屏蔽机制是通用的，并且也出现在问题的不同参数中。在此过程中，我们在没有电荷的时空区域中提供了最通用的电动溶液，但是在其他地方存在静态和球体对称电荷分布的情况下。同时，我们还引入了方便的参数化，在带电的流体环境中存在带电的黑洞的情况下，提供了爱因斯坦 - 马克斯韦尔场方程的全局解决方案。我们还评论了爱因斯坦 - 马克斯韦尔集群中光子球，阴影半径和艾科纳尔准正常模式的性质。
We describe a shielding mechanism for a charged black hole immersed in a background involving charged matter fields, solely arising from the Einstein-Maxwell field equations. In particular, we consider a charged generalization of the Einstein cluster, that is a charged black hole surrounded by an effective fluid model for a partially charged dust cloud. We show that the shielding mechanism, arising thereof, is generic and appears in a different parametrization of the problem as well. In this process, we provide the most general electrovacuum solution in a spacetime region devoid of charges, but in the presence of a static and spherically symmetric charge distribution elsewhere. Side by side, we also introduce a convenient parametrization, providing the global solution of the Einstein-Maxwell's field equations in the presence of a charged black hole within the environment of charged fluid. We also comment on the nature of the photon sphere, shadow radius and the eikonal quasi-normal modes in the Einstein-Maxwell cluster.
