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arXiv · hep-th/0308056

Instability of Ultra-Spinning Black Holes

Roberto Emparan·Robert C. Myers
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Abstract

It has long been known that, in higher-dimensional general relativity, there are black hole solutions with an arbitrarily large angular momentum for a fixed mass. We examine the geometry of the event horizon of such ultra-spinning black holes and argue that these solutions become unstable at large enough rotation. Hence we find that higher-dimensional general relativity imposes an effective `Kerr-bound' on spinning black holes through a dynamical decay mechanism. Our results also give indications of the existence of new stationary black holes with `rippled' horizons of spherical topology. We consider various scenarios for the possible decay of ultra-spinning black holes, and finally discuss the implications of our results for black holes in braneworld scenarios.

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Roberto Emparan, Robert C. Myers. 2003-08-22. Instability of Ultra-Spinning Black Holes. https://doi.org/10.1088/1126-6708%2F2003%2F09%2F025

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