Speaker
Description
Gravitational-wave observations offer a powerful way to probe compact binary coalescences and test strong-field gravity. In this talk, I will present a preliminary study on gravitational-wave data analysis using the F-statistic, focusing on its applications to black-hole ringdown and full inspiral–merger–ringdown analyses. By analytically maximizing over amplitude-related parameters, the method reduces the dimensionality of the parameter space and improves sampling efficiency. Specifically, the parameter estimation efficiency for ringdown analysis is improved by at least a factor of 100, while for the full inspiral–merger–ringdown analysis, the improvement in parameter estimation efficiency reaches up to approximately a factor of 5. Injection studies and applications to events such as GW150914, GW231028, GW190412, and GW190814 show that the F-statistic can recover source parameters efficiently and help assess evidence for sub-dominant ringdown modes. These results suggest that the F-statistic is a promising tool for future gravitational-wave data analyses.