Please contact divya.singh@berkeley.edu, tianqi.zhao@berkeley.edu, or klund@berkeley.edu for zoom links.

A Galactic supernova would be an unprecedented highlight for multi-messenger astronomy, and could become the first event for a coincident detection of electromagnetic radiation, neutrinos and gravitational waves. As messengers from the supernova core, neutrinos and gravitational waves have the potential to revolutionise our understanding of the explosion mechanism. In particular, they can reveal the presence of hydrodynamic instabilities and neutron star oscillation modes, whose frequencies constrain key bulk properties of the supernova core. Focusing mostly, though not exclusively, on gravitational waves, I will discuss recent advances in our understanding of the signal from instabilities and oscillation modes such as the possibility of a core g-mode signal, which is directly sensitive to the properties of high-density nuclear matter. I will also discuss the prospects for time-dependent measurements of mode frequencies with future instruments.