paper

Radiating Kerr-Newman black hole in gravity

arXiv:1208.3028 · doi:10.1140/epjc/s10052-013-2473-z

Abstract

We derive an exact radiating Kerr-Newman like black hole solution, with constant curvature imposed, to {\it metric} gravity via complex transformations suggested by Newman-Janis. This generates a geometry which is precisely that of radiating Kerr-Newman-de Sitter / anti-de Sitter with the gravity contributing an cosmological-like term. The structure of three horizon-like surfaces, {\it viz.} timelike limit surface, apparent horizon and event horizon, are determined. We demonstrate the existence of an additional cosmological horizon, in gravity model, apart from the regular black hole horizons that exist in the analogous general relativity case. In particular, the known stationary Kerr-Newman black hole solutions of gravity and general relativity are retrieved. We find that the timelike limit surface becomes less prolate with thereby affecting the shape of the corresponding ergosphere.

11 pages, 6 figures, new text and reference added

References in corpus (6)

Cited by in corpus (19)