Exploding core-collapse supernovae by jets-driven feedback mechanism

Abstract

We study the flow structure in the jittering-jets explosion model of core-collapse supernovae using 2.5D hydrodynamical simulations and find that some basic requirements for explosion are met by the flow. In the jittering-jets model, jets are launched by intermittent accretion disc around the newly born neutron star and in stochastic directions. They deposit their kinetic energy inside the collapsing core and induce explosion by ejecting the outer core. The accretion and launching of jets is operated by a feedback mechanism: when the jets manage to eject the core, the accretion stops. We find that even when the jets' directions are varied around the symmetry axis, they inflate hot bubbles that manage to expel gas in all directions. We also find that although most of the ambient core gas is ejected outwards, sufficient mass to power the jets is accreted (~0.1M⊙), mainly from the equatorial plane direction. This is compatible with the jittering jets explosion mechanism being a feedback mechanism. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.