Black-hole normal modes: A WKB approach. IV. Kerr black holes

Edward Seidel and Sai Iyer
Phys. Rev. D 41, 374 – Published 15 January 1990
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Abstract

Using the higher-order WKB method developed by Iyer and Will, we have computed the low-lying normal modes of Kerr black holes for both scalar and gravitational perturbations. For the gravitational modes, we compare our results to previously published numerical results. For some of these modes, we find agreement to within 1% for both the real and imaginary parts of the normal-mode frequency over a wide range of values for the rotation parameter a of the black hole. For other modes, good agreement is limited to lower values of a. The difficulties of the method for higher values of the rotation parameter are discussed.

  • Received 24 July 1989

DOI:https://doi.org/10.1103/PhysRevD.41.374

©1990 American Physical Society

Authors & Affiliations

Edward Seidel* and Sai Iyer

  • McDonnell Center for the Space Sciences, Department of Physics, Washington University, St. Louis, Missouri 63130

  • *Present address: National Center for Supercomputing Applications, University of Illinois, Champaign, IL 61820.
  • Present address: Astrophysics Group, Raman Research Institute, Bangalore 560080, India.

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Vol. 41, Iss. 2 — 15 January 1990

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