Boosting Jittering Jets by Neutrino Heating in Core Collapse Supernovae

Noam Soker*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

I estimate the energy that neutrino heating adds to the outflow that jets induce in the collapsing core material in core collapse supernovae (CCSNe), and find that this energy crudely doubles the energy that the jets deposit into the outer core. I consider the jittering jets explosion mechanism where there are several stochastic jet-launching episodes, each lasting for about 0.01-0.1 s. The collapsing core material passes through the stalled shock at about 100 km and then slowly flows onto the proto-neutron star (NS). I assume that the proto-NS launches jittering jets, and that the jets break out from the stalled shock. I examine the boosting process by which the high-pressure gas inside the stalled shock, the gain region material, expands alongside the jets and does work on the material that the jets shock, the cocoon. This work is crudely equal to the energy that the original jets carry. I argue that the coupling between instabilities, stochastic rotation, magnetic fields, and jittering jets leads to most CCSN explosions. In other cases, the pre-collapse core is rapidly rotating and therefore ordered rotation replaces stochastic rotation and fixed jets replace jittering jets.

Original languageEnglish
Article number095007
JournalResearch in Astronomy and Astrophysics
Volume22
Issue number9
DOIs
StatePublished - Sep 2022
Externally publishedYes

Keywords

  • (stars:) supernovae: general
  • ISM: supernova remnants
  • stars: jets

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