Probing the metastability of protoneutron star using DD2 hyperon equation of state in core-collapse supernova

We have studied the effect of hadron hyperon phase transition in core-collapse supernova using general relativistic hydrodynamic simulation GR1D. By following the dynamical collapse of a new-born proto neutron star from the gravitational collapse of a 40M_solar star adopting our DD2 EoS and Shen EoS, we notice that hyperons appear just before bounce. It appears off center at first due to high temperature and prevails at the center just before the black hole formation, when the density becomes quite high. Hyperons triggers the black-hole formation. Hyperons triggers the black-hole formation, but fails to generate the second shock as the EoS is softened too much with the appearance of hyperons. No second neutrino burst is observed