Quasi-normal modes of spherically symmetric black hole spacetimes with cosmic string in a Dirac field

Details Quasi-normal modes of spherically symmetric black hole spacetimes with cosmic string in a Dirac field Quasi-normal modes of spherically symmetric black hole spacetimes with cosmic string in a Dirac field

2008-02-06

arxiv.org/abs/0802.0788v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages, 16 figures, title, abstract and content in section 2 changed

Scientific paper

Dirac equation for a general black hole metric having a cosmic string is derived. The quasi-normal mode frequencies for Schwarzschild, RN extremal, SdS and near extremal SdS black hole space-times with cosmic string perturbed by a massless Dirac field are obtained using WKB approximation and found that in all these cases, decay is less in black holes having cosmic string compared to black holes with out string.

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