Nonlinear effects in black hole ringdown
General Relativity and Quantum Cosmology
2023-02-28 v3 High Energy Astrophysical Phenomena
High Energy Physics - Theory
Abstract
We report evidence for nonlinear modes in the ringdown stage of the gravitational waveform produced by the merger of two comparable-mass black holes. We consider both the coalescence of black hole binaries in quasicircular orbits and high-energy, head-on black hole collisions. The presence of nonlinear modes in the numerical simulations confirms that general-relativistic nonlinearities are important and must be considered in gravitational-wave data analysis.
Cite
@article{arxiv.2208.07374,
title = {Nonlinear effects in black hole ringdown},
author = {Mark Ho-Yeuk Cheung and Vishal Baibhav and Emanuele Berti and Vitor Cardoso and Gregorio Carullo and Roberto Cotesta and Walter Del Pozzo and Francisco Duque and Thomas Helfer and Estuti Shukla and Kaze W. K. Wong},
journal= {arXiv preprint arXiv:2208.07374},
year = {2023}
}
Comments
6 + 6 pages, 7 figures. Matches version published in Physical Review Letters