Quasinormal Modes of Dirty Black Holes

Department of Physics, Washington University in St. Louis, San Luis, Missouri, United States
Physical Review Letters (Impact Factor: 7.51). 03/1999; 78(15). DOI: 10.1103/PhysRevLett.78.2894
Source: arXiv


Quasinormal mode (QNM) gravitational radiation from black holes is expected to be observed in a few years. A perturbative formula is derived for the shifts in both the real and the imaginary part of the QNM frequencies away from those of an idealized isolated black hole. The formulation provides a tool for understanding how the astrophysical environment surrounding a black hole, e.g., a massive accretion disk, affects the QNM spectrum of gravitational waves. We show, in a simple model, that the perturbed QNM spectrum can have interesting features. Comment: 4 pages. Published in PRL

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Available from: Kenneth Young, Jan 29, 2014
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    • "Here, the gap is given by the surface gravity. One can try to extend this analysis to more general situations and also include spacetimes with two horizons, but then generic results become much harder to obtain [29] [30] [31] [32] (curiously, for spacetimes with multiple horizons, there is a unique definition of temperature only when the ratio of surface gravities is in Q [32] [33]). "
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