Considerations on the excitation of black hole quasinormal modes
Abstract
We provide some considerations on the excitation of black hole quasinormal modes (QNMs) in different physical scenarios. Considering a simple model in which a stream of particles accretes onto a black hole, we show that resonant QNM excitation by hyperaccretion requires a significant amount of fine-tuning, and is quite unlikely to occur in nature. Then we summarize and discuss present estimates of black hole QNM excitation from gravitational collapse, distorted black holes and head-on black hole collisions. We emphasize the areas that, in our opinion, are in urgent need of further investigation from the point of view of gravitational wave source modeling.
Keywords
Cite
@article{arxiv.gr-qc/0601077,
title = {Considerations on the excitation of black hole quasinormal modes},
author = {Emanuele Berti and Vitor Cardoso and Clifford M. Will},
journal= {arXiv preprint arXiv:gr-qc/0601077},
year = {2009}
}
Comments
11 pages, 2 figures, proceedings of the 7th International Conference of the Hellenic Astronomical Society. Complements section VB of gr-qc/0512160