Influence of the symmetry energy on the birth of neutron stars and supernova neutrinos

TL;DR

This paper investigates how the symmetry energy in the nuclear equation of state affects the thermal evolution of protoneutron stars and the characteristics of supernova neutrinos through numerical simulations.

Contribution

It demonstrates the significant impact of symmetry energy on lepton profiles and neutrino fluxes during protoneutron star evolution.

Findings

Symmetry energy influences lepton profile evolution.

Symmetry energy affects supernova neutrino fluxes.

Different symmetry energies lead to distinct thermal evolutions.

Abstract

We study the influence of the symmetry energy of the equation of state on the thermal evolution of protoneutron stars and the properties of supernova neutrinos by the numerical simulations after the protoneutron stars are formed. As for the equation of state (EOS) of nuclear matter, we take two EOS's with different symmetry energies obtained by the relativistic mean field theory. We find the symmetry energy plays the essential role on the evolution of lepton profiles and the neutrino fluxes.