Abstract
The model of a black hole rotating in an external magnetic field is considered. The mechanisms of the energy extraction from the black hole in terms of the effective ergospheres for charged particles are described. It is shown that the external magnetic field essentially influences the boundaries of the effective ergospheres and the superradiance threshold.
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Aliev, A.N., Gal'tsov, D.V. Energetics of magnetized black holes: Effective ergospheres and superradiance. Astrophys Space Sci 143, 301–316 (1988). https://doi.org/10.1007/BF00637142
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DOI: https://doi.org/10.1007/BF00637142