Numerical simulation of Quasi-Normal Modes in time-dependent background

Details Numerical simulation of Quasi-Normal Modes in time-dependent background Numerical simulation of Quasi-Normal Modes in time-dependent background

2003-04-30

arxiv.org/abs/gr-qc/0304109v2

Mod.Phys.Lett. A19 (2004) 239

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 8 figures; reference added

Scientific paper

10.1142/S021773230401240X

We study the massless scalar wave propagation in the time-dependent Schwarzschild black hole background. We find that the Kruskal coordinate is an appropriate framework to investigate the time-dependent spacetime. A time-dependent scattering potential is derived by considering dynamical black hole with parameters changing with time. It is shown that in the quasinormal ringing both the decay time-scale and oscillation are modified in the time-dependent background.

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