Journal ArticleDOI
Black hole in a uniform magnetic field
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In this paper, the authors derived the solution for the electromagnetic field occurring when a stationary, axisymmetric black hole is placed in an originally uniform magnetic field aligned along the symmetry axis of the black hole.Abstract:
Using the fact that a Killing vector in a vacuum spacetime serves as a vector potential for a Maxwell test field, we derive the solution for the electromagnetic field occurring when a stationary, axisymmetric black hole is placed in an originally uniform magnetic field aligned along the symmetry axis of the black hole. It is shown that a black hole in a magnetic field will selectively accrete charges until its charge becomes $Q=2{\mathrm{Bb}}_{0}J$, where ${B}_{0}$ is the strength of the magnetic field and $J$ is the angular momentum of the black hole. As a by-product of the analysis given here, we prove that the gyromagnetic ratio of a slightly charged, stationary, axisymmetric black hole (not assumed to be Kerr) must have the value $g=2$.read more
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Black hole in a superconducting plasma
TL;DR: In this paper, the authors investigated the behavior of superconductible plasmas in black hole spacetime geometries using the curved spacetime generalization of the grand generalized vortical formalism, and they showed that if the magnetic field is axisymmetric and the thermodynamic properties are symmetric about the equatorial plane, the resulting states are characterized by a vanishing skin depth and a complete expulsion of magnetic field at the equator of the black hole horizon.
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Dynamics of the particle around de Sitter-Schwarzschild black hole surrounded by quintessence
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Electric Penrose process: High-energy acceleration of ionized particles by nonrotating weakly charged black hole
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Kinematic restrictions on particle collisions near extremal black holes: A unified picture
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Book ChapterDOI
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