Název:
Astrophysical black holes embedded in organized magnetic fields
Autoři:
Karas, Vladimír Typ dokumentu: Příspěvky z konference Konference/Akce: RAGtime /23.-25./, Opava (CZ), 20231127
Rok:
2023
Jazyk:
eng
Abstrakt: Large-scale magnetic fields pervade the cosmic environment where the astrophysical black holes are often embedded and influenced by mutual interaction. In thiscontribution, 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.
Klíčová slova:
black holes; electromagnetic fields; general relativity Číslo projektu: GX21-06825X Poskytovatel projektu: GA ČR Zdrojový dokument: Proceedings of RAGtime 23/25: Workshops on black holes and neutron stars, ISBN 978-80-7510-577-6