Speaker
Description
Core-collapse supernovae (CCSNe) are one of the most energetic particle generators due to their extremely high densities and temperatures. If sterile neutrinos exist, these may also be produced in the supernova core through their mixing with active neutrinos. These heavy sterile neutrinos can escape the stellar envelope and then decay into photons and neutrinos, which can be detected at $\gamma$-ray telescopes and neutrino detectors, respectively. In this talk, I will first revisit the existing gamma ray constraints on the sterile neutrino parameter space from the non-observation of $\gamma$-rays from SN1987A. Finally, I will discuss the sensitivity of several present and near future $\gamma$-ray telescopes assuming a future galactic CCSN.
