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Astrophysics > High Energy Astrophysical Phenomena

arXiv:2108.00196 (astro-ph)
[Submitted on 31 Jul 2021 (v1), last revised 8 Sep 2021 (this version, v2)]

Title:QCD phase transition drives supernova explosion of a very massive star

Authors:Tobias Fischer
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Abstract:The nature of core-collapse supernova (SN) explosions is yet incompletely understood. The present article revisits the scenario in which the release of latent heat due to a first-order phase transition, from normal nuclear matter to the quark-gluon plasma, liberates the necessary energy to explain observed SN explosions. Here, the role of the metallicity of the stellar progenitor is investigated, comparing a solar metallicity and a low-metallicity case, both having a zero-age main sequence (ZAMS) mass of 75 $M_\odot$. It is found that low-metallicity models belong exclusively to the failed SN branch, featuring the formation of black holes without explosions. It excludes this class of massive star explosions as possible site for the nucleosynthesis of heavy elements at extremely low metallicity, usually associated with the early universe.
Comments: 13 pages, 7 figures, published in European Physical Journal A Topical Issue 'CompOSE: a repository for Neutron Star Equations of State and Transport Properties'
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)
Cite as: arXiv:2108.00196 [astro-ph.HE]
  (or arXiv:2108.00196v2 [astro-ph.HE] for this version)
  https://doi.org/10.48550/arXiv.2108.00196
Related DOI: https://doi.org/10.1140/epja/s10050-021-00571-z

Submission history

From: Tobias Fischer [view email]
[v1] Sat, 31 Jul 2021 09:44:23 UTC (726 KB)
[v2] Wed, 8 Sep 2021 17:15:43 UTC (662 KB)
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