Quasinormal resonances of near-extremal Kerr-Newman black holes

Details Quasinormal resonances of near-extremal Kerr-Newman black holes Quasinormal resonances of near-extremal Kerr-Newman black holes

2008-10-30

arxiv.org/abs/0810.5419v1

Phys.Lett.B666:483-485,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages

Scientific paper

10.1016/j.physletb.2008.08.002

We study analytically the fundamental resonances of near-extremal, slowly rotating Kerr-Newman black holes. We find a simple analytic expression for these black-hole quasinormal frequencies in terms of the black-hole physical parameters: omega=m Omega-2i pi T(l+1+n), where T and Omega are the temperature and angular velocity of the black hole. The mode parameters l and m are the spheroidal harmonic index and the azimuthal harmonic index of a co-rotating mode, respectively. This analytical formula is valid in the regime Im omega << Re omega <<1/M, where M is the black-hole mass.

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