Supernova Neutrino Distribution: Correlation of Fit Parameters with Hydrodynamic Spatial Scales

Based on the results of one-dimensional simulation of a supernova explosion, the internal structure of the core-collapse supernova is investigated. The spatial supernova scales are obtained as function of time after a bounce for seven supernova models. It is shown that transition radius between the baryon-dominated and the radiation-dominated regime cannot be found for some time interval at simple limiting cases. Correlations between the spatial supernova scales and parameters, which determinate the width of the angular and spectral distribution of the neutrino in the outer part of the supernova, are studied. The angular parameter correlates with the neutrinosphere radius of the electron neutrino. The width of the spectral distribution is proportional to the inverse radius of protoneutron star.