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

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.

6 pages, LaTeX file using l-aa.sty. 12 figures in uuencoded compressed tar PostScript files. Accepted for publication in Astronomy and Astrophysics on March 27, 1995. PostScript version and related files also available at ftp://ftp.kek.jp/kek/preprints/1995/059