%0 Journal Article
%T Influence of pions and hyperons on stellar black hole formation
%A Bruno Peres
%A Micaela Oertel
%A Jerome Novak
%J Physics
%D 2012
%I arXiv
%R 10.1103/PhysRevD.87.043006
%X We present numerical simulations of stellar core-collapse with spherically symmetric, general relativistic hydrodynamics up to black hole formation. Using the CoCoNuT code, with a newly developed grey leakage scheme for the neutrino treatment, we investigate the effects of including pions and \Lambda-hyperons into the equation of state at high densities and temperatures on the black hole formation process. Results show non-negligible differences between the models with reference equation of state without any additional particles and models with the extended ones. For the latter, the maximum masses supported by the proto-neutron star are smaller and the collapse to a black hole occurs earlier. A phase transition to hyperonic matter is observed when the progenitor allows for a high enough accretion rate onto the proto-neutron star. Rough estimates of neutrino luminosity from these collapses are given, too.
%U http://arxiv.org/abs/1210.7435v3