Exploding core-collapse supernovae by jets-driven feedback mechanism

Abstract

We study the flow structure in the jittering-jets explosion model of\ncore-collapse supernovae (CCSNe) using 2.5D hydrodynamical simulations and find\nthat some basic requirements for explosion are met by the flow. In the\njittering-jets model jets are launched by intermittent accretion disk around\nthe newly born neutron star and in stochastic directions. They deposit their\nkinetic energy inside the collapsing core and induce explosion by ejecting the\nouter core. The accretion and launching of jets is operated by a feedback\nmechanism: when the jets manage to eject the core, the accretion stops. We find\nthat even when the jets' directions are varied around the symmetry axis they\ninflate hot bubbles that manage to expel gas in all directions. We also find\nthat although most of the ambient core gas is ejected outward, sufficient mass\nto power the jets is accreted (0.1Mo), mainly from the equatorial plane\ndirection. This is compatible with the jittering jets explosion mechanism being\na feedback mechanism.\n