2009年
Possible discovery of nonlinear tail and quasinormal modes in black hole ringdown
Journal of Physics: Conference Series
- ,
- ,
- 巻
- 154
- 号
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1088/1742-6596/154/1/012051
- 出版者・発行元
- Institute of Physics Publishing
We discuss the nonlinear evolution of black hole ringdown in the framework of higher-order metric perturbation theory. By solving the initial-value problem of a simplified nonlinear field model analytically as well as numerically, we find that (i) second-order quasinormal modes (QNMs) are indeed excited at frequencies different from those of first-order QNMs, as predicted recently. We also find serendipitously that (ii) late-time evolution is dominated by a new type of power-law tail at late times. This "second-order power-law tail" decays more slowly than any late-time tails known in the first-order (i.e., linear) perturbation theory, and is generated at the wavefront of the first-order perturbation by an essentially nonlinear mechanism. These nonlinear components should be particularly significant for binary black hole coalescences, and could open a new precision science in gravitational wave studies. © 2009 IOP Publishing Ltd.
- リンク情報
- ID情報
-
- DOI : 10.1088/1742-6596/154/1/012051
- ISSN : 1742-6596
- ISSN : 1742-6588
- SCOPUS ID : 66149088325