Killing Horizons as Equipotential Hypersurfaces [PDF]
Ivica SmolićWe present a new, more general proof that Killing horizons are equipotential hypersurfaces for the electric and magnetic scalar potentials, that makes no use of gravitational field equations or the assumption about the existence of bifurcation surface. Also, we note that under certain conditions the electrodynamic equipotential hypersurfaces are necessarily Killing horizons.View original: http://arxiv.org/abs/1205.1071
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