http://arxiv.org/abs/2008.05087
Cosmic metals are widely believed to be produced by supernovae (SNe) and compact object mergers. Here, we discuss the nucleosynthesis of neutrino-dominated accretion flows (NDAFs) with outflows in the core-collapse SNe (CCSNe), and show that the outflows from NDAFs can have a significant contribution to the $^{56}$Ni abundance if the masses of the progenitor stars are within about $25-50$ $M_\odot$. As a result, the $^{56}$Ni mass per SNe depends only weakly upon the progenitor stars. We also find that the $^{56}$Fe (decayed by $^{56}$Ni) production rate in CCSNe can increase by $\lesssim 50\%$ if the nucleosynthesis of NDAF outflows is considered. Our results might have significant implication for the chemical evolution of galaxies and active galactic nuclei.
T. Liu, Y. Qi, Z. Cai, et. al.
Thu, 13 Aug 20
-888/67
Comments: 8 pages, 5 figures, submitted to ApJ
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