Quasi-normal modes of Schwarzschild-de Sitter black holes

Details Quasi-normal modes of Schwarzschild-de Sitter black holes Quasi-normal modes of Schwarzschild-de Sitter black holes

2003-07-03

arxiv.org/abs/gr-qc/0307012v4

Class.Quant.Grav. 21 (2004) 273-280

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, LaTeX

Scientific paper

10.1088/0264-9381/21/1/019

The low-laying frequencies of characteristic quasi-normal modes (QNM) of Schwarzschild-de Sitter (SdS) black holes have been calculated for fields of different spin using the 6th-order WKB approximation and the approximation by the P\"{o}shl-Teller potential. The well-known asymptotic formula for large $l$ is generalized here on a case of the Schwarzchild-de Sitter black hole. In the limit of the near extreme $\L$ term the results given by both methods are in a very good agreement, and in this limit fields of different spin decay with the same rate.

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