Estimating the core-collapse time using gravitational waves from a core-collapse supernova

The core-collapse supernovae is a sudden and extremely energetic explosion that ends the life of giant stars, but its mechanism is still not fully understood. As the fission fuel burns, the star tends to an inevitable end. When the resulting iron core is sufficiently large it suddenly collapses with a neutrino burst. Around a hundred milliseconds later the asymmetry of a supernova evolves allowing gravitational waves to be emitted efficiently. While several authors focus on inferring physical properties and estimating parameters from gravitational-wave signatures, we aim to develop a method that determines the moment of the core collapsing using only gravitational waves as the initial neutrino emission may be weak or the collapsed star may be distant. Our study will use gravitational-wave signals predicted from recent core-collapse supernova simulations, and we will employ the model-independent coherent WaveBurst algorithm and we will use publicly available LIGO/Virgo/KAGRA data for testing the method.