Publikace ÚTF

Meissner effect for weakly isolated horizons

Gürlebeck, N.; Scholtz, M.

Black holes are important astrophysical objects describing an end state of stellar evolution, which are
observed frequently. There are theoretical predictions that Kerr black holes with high spins expel magnetic
fields. However, Kerr black holes are pure vacuum solutions, which do not include accretion disks, and
additionally previous investigations are mainly limited to weak magnetic fields. We prove for the first time
in full general relativity that generic rapidly spinning black holes including those deformed by accretion
disks still expel even strong magnetic fields. Analogously to a similar property of superconductors, this is
called the Meissner effect.
journal:Phys. Rev. D

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