Spectroscopy of extremal and near-extremal Kerr black holes

@article{Casals2019SpectroscopyOE,
  title={Spectroscopy of extremal and near-extremal Kerr black holes},
  author={M. Casals and L. F. L. Micchi},
  journal={Physical Review D},
  year={2019},
  volume={99}
}
  • M. Casals, L. F. L. Micchi
  • Published 2019
  • Physics
  • Physical Review D
  • We investigate linear, spin-field perturbations of Kerr black holes in the extremal limit throughout the complex-frequency domain. We calculate quasi-normal modes of extremal Kerr, as well as of near-extremal Kerr, via a novel approach: using the method of Mano, Suzuki and Takasugi (MST). We also show how, in the extremal limit, a branch cut is formed at the superradiant-bound frequency, $\omega_{SR}$, via a simultaneous accumulation of quasi-normal modes and totally-reflected modes. For real… CONTINUE READING

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