Title: Quasi-normal mode ringing of binary black mergers in scalar-Gauss-Bonnet gravity

Place: Seminar del DAA. Jeroni Muñoz Research Building, fourth floor, in Burjassot.

Day: Wensday, september 10, 2025. Time: 12.00.

Abstract:

Observations of ringdown of binary black hole (BBH) mergers provide us a powerful way to explore the strong and highly dynamical regime of gravity theories. It is particular interest for both the black hole (BH) spectroscopy and the inspiral-merger-ringdown consistency check. We investigate the ringdown of BBH merger in scalar-Gauss-Bonnet (sGB) gravity by performing self-consistent fully nonlinear simulations, which provide the quasi-normal mode (QNM) excitation amplitude and phase information that is not achievable from perturbative calculations. In this talk, I will discuss the results of our simulations and QNM extraction.