The implications of large binding energies of massive stripped core collapse supernova progenitors on the explosion mechanism
ABSTRACT We examine the binding energies of massive stripped-envelope core collapse supernova (SECCSN) progenitors with the stellar evolution code mesa, and find that the jittering jets explosion mechanism is preferred for explosions where carbon–oxygen cores with masses of ${\gtrsim} 20 \, \mathrm{...
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Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2023-04, Vol.522 (1), p.438-445 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | ABSTRACT
We examine the binding energies of massive stripped-envelope core collapse supernova (SECCSN) progenitors with the stellar evolution code mesa, and find that the jittering jets explosion mechanism is preferred for explosions where carbon–oxygen cores with masses of ${\gtrsim} 20 \, \mathrm{M}_\odot$ collapse to leave a neutron star (NS) remnant. We calculate the binding energy at core collapse under the assumption that the remnant is an NS. Namely, stellar gas above mass coordinate of ${\simeq} 1.5\text{{--}}2.5 \, \mathrm{M}_\odot$ is ejected in the explosion. We find that the typical binding energy of the ejecta of stripped-envelope (SE) progenitors with carbon–oxygen core masses of $M_{\rm CO} \gtrsim 20 \, \mathrm{M}_\odot$ is $E_{\rm bind} \gtrsim 2 \times 10^{51} {~\rm erg}$. We claim that jets are most likely to explode such cores as jet-driven explosion mechanisms can supply high energies to the explosion. We apply our results to SN 2020qlb, which is an SECCSN with a claimed core mass of ${\simeq} 30\!-\!50 \, \mathrm{M}_\odot$, and conclude that the jittering jets explosion mechanism best accounts for such an explosion that leaves an NS. |
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ISSN: | 0035-8711 1365-2966 |
DOI: | 10.1093/mnras/stad889 |