The Meissner Effect for axially symmetric charged black holes

Abstract

In our previous work [N. Gürlebeck, M. Scholtz, Phys. Rev. D 95 064010 (2017)], we have shown that electric and magnetic fields are expelled from the horizons of extremal, stationary and axially symmetric uncharged black holes; this is called the Meissner effect for black holes. Here, we generalize this result in several directions. First, we allow that the black hole carries charge, which requires a generalization of the definition of the Meissner effect. Next, we introduce the notion of almost isolated horizons, which is weaker than the usual notion of isolated horizons, since the geometry of the former is not necessarily completely time-independent. Moreover, we allow the horizon to be pierced by strings, thereby violating the usual assumption on the spherical topology made in the definition of the weakly isolated horizon. Finally, we spell out in detail all assumptions entering the proof and show that the Meissner effect is an inherent property of black holes even in full non-linear theory.

11 pages

References in corpus (4)

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• On asymptotically flat solutions of Einstein's equations periodic in time I. Vacuum and electrovacuum solutions
• The Meissner effect for weakly isolated horizons
• Kerr-Newman black hole in the formalism of isolated horizons

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