Probing the onset timing of the Ledoux convection in core-collapse supernovae using gravitational waves

A core-collapse supernova in the Milky Way will be one of the most important astronomical events of the century and the detected gravitational waves will allow us to directly probe the inner engine of these explosive phenomena. The sudden collapse of a core is marked with a robust emission of neutrinos. Only after around a hundred milliseconds later does the asymmetry develop, marking the beginning of possible explosion. It has been suggested that the supernova asymmetry, leading to the efficient emission of gravitational waves, develops through the Ledoux convection. In our work, we develop a method to determine the onset timing of the Ledoux convection from simulated gravitational wave strains. We apply the timing information from neutrino observations and utilize the model-independent coherent WaveBurst (cWB) search pipeline. For testing the method we use the most recent core-collapse supernova multidimensional simulations. We describe the limitations of our method and the impact of signal-to-noise ratio of the reconstructed event on estimation accuracy.