http://arxiv.org/abs/2301.05144
We examine the binding energy of massive stripped-envelope core collapse supernova (SECCSN) progenitors with the stellar evolution code MESA, and find that only the jittering jets explosion mechanism can account for explosions where carbon-oxygen cores with masses of $>20M_\odot$ collapse to leave a neutron star (NS) remnant. We calculate the binding energy at core collapse under the assumption that the remnant is a NS. Namely, stellar gas above mass coordinate of $~1.5-2.5M_\odot$ is ejected in the explosion. We find that the typical binding energy of the ejecta of stripped-envelope progenitors with carbon-oxygen core masses of $M_{CO}>20M_\odot$ is $E_{bind}>2×10^{51} erg$. Since only jet-driven explosion mechanisms can supply such high energies, we conclude that jets must explode such cores. We apply our results to SN 2020qlb, which is a SECCSN with a claimed core mass of $~30-50M_\odot$, and conclude that the jittering jets explosion mechanism best account for such an explosion that leaves a NS.
D. Shishkin and N. Soker
Fri, 13 Jan 23
11/72
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