Role of hyperons in black hole formation

Abstract

A phase transition from hadronic to exotic phases might occur in the early post-bounce phase of a core collapse supernova. We investigate the role of strange hyperons in the dynamical collapse of a non-rotating massive star to a black hole using 1D General relativistic simulation GR1D. We follow the dynamical formation and collapse of a protoneutron star (PNS) from the gravitational collapse of a 40Msolar progenitor of Wooseley, adopting Shen hyperonic EoS. We also study the neutrino signals that may be used as a probe to core collapse supernova. We compare the results with those of Shen nuclear EoS and understand the role of strange hyperons in the core collapse.