http://arxiv.org/abs/2208.07374
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.
M. Cheung, V. Baibhav, E. Berti, et. al.
Wed, 17 Aug 22
29/58
Comments: 11 pages, 6 figures
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