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Phys. Rev. D 71, 044003 (2005) [10 pages]

Quasinormal modes in a time-dependent black hole background

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Cheng-Gang Shao and Bin Wang*
Department of Physics, Fudan University, Shanghai 200433, People's Republic of China

Elcio Abdalla†
Instituto de Fisica, Universidade de Sao Paulo, CP 66.318, CEP 05315-970, Sao Paulo, Brazil

Ru-Keng Su‡
China Center of Advanced Science and Technology (World Laboratory), P.B. Box 8730, Beijing 100080, People's Republic of China
Department of Physics, Fudan University, Shanghai 200433, People's Republic of China

Received 6 October 2004; revised 29 November 2004; published 2 February 2005

We have studied the evolution of the massless scalar field propagating in a time-dependent charged Vaidya black hole background. A generalized tortoise coordinate transformation was used to study the evolution of the massless scalar field. It is shown that, for the slowest damped quasinormal modes, the approximate formulas in the stationary Reissner-Nordström black hole turn out to be a reasonable prescription, showing that results from quasinormal mode analysis are rather robust.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.71.044003
DOI:
10.1103/PhysRevD.71.044003
PACS:
04.30.–w, 04.62.+v

*Electronic address: binwang@fudan.ac.cn

†Electronic address: eabdalla@fma.if.usp.br

‡Electronic address: rksu@fudan.ac.cn

 
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