Core-collapse supernovae and neutrino oscillation

After intensive and extensive basic research, it is gradually known that neutrino oscillations affect the dynamics of supernova explosions. Since the density of neutrino gas is so high near neutron stars, neutrino self-interaction that induced by scattering of neutrino, are particularly important. Among them, so-called fast flavor oscillation or collisional instability may become a game changer. In this talk, we report recent progress on the supernova simulations and results of systematic study of neutrino oscillation.