Horizon Instability of Extremal Kerr Black Holes: Nonaxisymmetric Modes and Enhanced Growth Rate
arXiv:1606.08505 · doi:10.1103/PhysRevD.94.064003
Abstract
We show that the horizon instability of the extremal Kerr black hole is associated with a singular branch point in the Green function at the superradiant bound frequency. We study generic initial data supported away from the horizon and find an enhanced growth rate due to nonaxisymmetric modes. The growth is controlled by the conformal weight of each mode. We speculate on connections to near-extremal black holes and holographic duality.
7 pages. 1 figure
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- Photon Emission Near Extreme Kerr Black Holes
- Synchronous frequencies of extremal Kerr black holes: resonances, scattering and stability
- High-order tail in Kerr spacetime
- Scalar Fields in Black Hole Spacetimes