Testing the No Hair theorem through the ringdown phase of binary black holes coalescences.
Carullo G., van der Schaaf L., London L., Meidam J., Agathos M., Tsang K.W., Tsun Ho Pang P., Hannuksela O., Samajdar A., Ghosh A., Li T.G.F., Del Pozzo W., Van Den Broeck C.
III - Astrofisica
Aula 32B-3 - Martedì 18 h 09:00 - 13:00
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General Relativity predicts the coalescence of binary black holes to produce a highly-distorted remnant black hole, whose equilibrium approach generates gravitational waves, arising from the characteristic oscillations of the underlying Kerr spacetime itself (ringdown). By employing cutting-edge numerical relativity models of the process and Bayesian parameter estimation techniques, we investigate the prospects of observing ringdown oscillations through the current gravitational waves detectors network, at its design sensitivity. This measurement, whose precision steadily increases with the number of observed events, will allow testing the Kerr nature of the remnant spacetime and possibly distinguish the presence of compact objects alternative to black holes.