标题： 星系物理黑洞嵌入有序磁场中：电荷不为零的情况 显示英文标题

标题： Astrophysical black holes embedded in organized magnetic fields: Case of a nonvanishing electric charge

摘要： 大尺度磁场渗透到天体物理黑洞所处的宇宙环境中，并受到相互作用的影响。 在本次贡献中，我们概述了描述广义相对论中磁化黑洞的适当数学框架，并展示了几个例子，说明这些框架如何在天体物理背景下应用。 特别是，我们从电真空爱因斯坦-麦克斯韦方程的一个精确解的角度来研究磁化黑洞度规，在存在非零电荷的影响下进行分析。 新的效应出现了：磁场通量从黑洞视界中被排斥的程度取决于施加磁场的强度。 显示英文摘要

摘要： Large scale magnetic fields pervade the cosmic environment where the astrophysical black holes are often embedded and influenced by the mutual interaction. In this contribution we outline the appropriate mathematical framework to describe magnetized black holes within General Relativity and we show several examples how these can be employed in the astrophysical context. In particular, we examine the magnetized black hole metric in terms of an exact solution of electro-vacuum Einstein-Maxwell equations under the influence of a non-vanishing electric charge. New effects emerge: the expulsion of the magnetic flux out of the black-hole horizon depends on the intensity of the imposed magnetic field.