Astrophysical black holes embedded in organized magnetic fields

Proceedings of RAGtime / Astrophysical black holes embedded in organized magnetic fields

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

Authors

Vladimír Karas

Abstract

Large-scale magnetic fields pervade the cosmic environment where the astrophysical black holes are often embedded and influenced by mutual interaction. In this contribution, we outline the appropriate mathematical framework to describe magnetized black holes within General Relativity, and we show several examples of 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.

Keywords

Black holes – electromagnetic fields – general relativity

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