A review paper argues that neutrinos alone cannot power most core-collapse supernova explosions and that jittering jets from the newborn neutron star are the primary explosion mechanism.
Magnetorotational neutron star kicks
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abstract
High velocity neutron stars, observed as rapidly moving radio-pulsars, are believed to gain high linear velocities -- kicks -- in aspherical supernova explosions. The mechanism of the kick formation is probably connected with anisotropic neutrino flash, and/or anisotropic matter ejection. In this paper, we investigate a neutron star kick origin in a magnetorotational (MR) supernova explosion model. The simulations have been done for a series of core collapse supernova models with initial equatorially asymmetric magnetic fields. We have realized 2D magnetohydrodynamic simulations, considering the protoneutron star kick and explosion properties in three different asymmetric magnetic field configurations. The simulations show, that in the MR supernova model protoneutron star kicks are formed with velocities up to ~500 km/s, due to asymmetric matter ejection in jets. It may explain the observed kick velocities of some neutron stars, formed in the MR supernovae explosions.
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The two alternative explosion mechanisms of core-collapse supernovae: 2024 status report
A review paper argues that neutrinos alone cannot power most core-collapse supernova explosions and that jittering jets from the newborn neutron star are the primary explosion mechanism.