München 2009 – wissenschaftliches Programm
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GR: Fachverband Gravitation und Relativitätstheorie
GR 6: Hauptvorträge Mittwoch
GR 6.2: Hauptvortrag
Mittwoch, 11. März 2009, 09:15–10:00, A214
The inner Cauchy horizon of axisymmetric and stationary black holes with surrounding matter — •Marcus Ansorg — Albert-Einstein-Institut, 14476 Golm
We investigate the interior of regular axisymmetric and stationary black holes surrounded by matter and find that for non-vanishing angular momentum of the black hole the space time can always be extended regularly up to and including an inner Cauchy horizon. We provide an explicit relation for the regular metric at the inner Cauchy horizon in terms of that at the event horizon. As a consequence, we obtain the universal equality (8π J)2 = A+ A− where J is the black hole’s angular momentum and A− and A+ denote the horizon areas of inner Cauchy and event horizon, respectively. We also find that in the limit J → 0 the inner Cauchy horizon becomes singular.