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.

Nonlinear Effects in Black Hole Ringdown

Carullo, Gregorio;Del Pozzo, Walter;
2023-01-01

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.
2023
Cheung, Mark Ho-Yeuk; Baibhav, Vishal; Berti, Emanuele; Cardoso, Vitor; Carullo, Gregorio; Cotesta, Roberto; Del Pozzo, Walter; Duque, Francisco; Helfer, Thomas; Shukla, Estuti; Wong, Kaze W K
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/1176545
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