Asymmetric Magnetorotational Supernovae for Various Stellar Masses

Abstract

Asymmetry of a core-collapse supernova explosion is an effective mechanism for a large kick velocity generation of neutron stars and black holes, formed during such violent and bright events. In this work, we conduct MHD simulations of a magnetorotational supernova explosion with an offset dipole field for two progenitor models of massive stars with zero-age main sequence masses of 20 and 35 \({{M}_{ \odot }}\). The offset position of the dipole field results in a development of equatorially asymmetric outflows, leading to a formation of kick velocity of the protoneturon star. The results show, that the initial mass of the massive star could strongly affect the acquired protoneutron star kicks, while their estimated values are in order of several hundreds of kilometers per second at \( \sim 1\) s after the core bounce.