Seminarium Teorii Względności i Grawitacji

Since the groundbreaking first detection of a gravitational wave (GW) by LIGO in September 2015, the field of GW astronomy has rapidly advanced. Improvements in the rate of confirmed events, the sensitivity and accuracy of GW interferometers, and the expansion of the LIGO-Virgo-KAGRA (LVK) detector network have opened unprecedented avenues for investigating diverse physical phenomena encoded in GW signals. In this talk, I will explore two distinct frontiers of GW signal characterization. Firstly, I will discuss methods to characterize the amplitude intensity of tensorial and non-tensorial polarization modes generated by binary systems during their inspiral phase, specifically within the framework of alternative theories of gravity. Secondly, I will present contemporary approaches to parameter estimation for GWs from core-collapse supernovae, focusing on how we decode information embedded in these burst signals using real LVK interferometric data and advanced machine learning techniques. Finally, I will highlight how these findings underscore the significant potential in our ongoing quest to detect and interpret gravitational wave signals.