Shock propagation and neutrino oscillation in supernova

The effect of the shock propagation on neutrino oscillation in supernova is studied paying attention to evolution of average energy of νe and ν̄e. We show that the effect appears as a decrease in average νe (in case of inverted mass hierarchy, ν̄e) energy at stellar surface as the shock propagates. It is found that the effect is significant 2 s after bounce if 3×10−5<sin2θ13<10−2.