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Journal Article

Near-horizon description of extremal magnetized stationary black holes and Meissner effect

MPS-Authors

Bicák,  Jiří
AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Fulltext (public)

1510.01911.pdf
(Preprint), 396KB

PhysRevD.92.104006.pdf
(Any fulltext), 265KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Bicák, J., & Hejda, F. (2015). Near-horizon description of extremal magnetized stationary black holes and Meissner effect. Physical Review D, 92: 104006. doi:10.1103/PhysRevD.92.104006.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0029-0536-A
Abstract
After a brief summary of the basic properties of stationary spacetimes representing rotating, charged black holes in strong axisymmetric magnetic fields, we concentrate on extremal cases, for which the horizon surface gravity vanishes. We investigate their properties by constructing simpler spacetimes that exhibit their geometries near degenerate horizons. Starting from the symmetry arguments we find that the near-horizon geometries of extremal magnetised Kerr-Newman black holes can be characterised by just one dimensionless parameter: "effective Kerr-Newman mixing angle". Employing the near-horizon geometries we demonstrate the Meissner effect of magnetic field expulsion from extremal black holes.