Effects of axions on Nucleosynthesis in massive stars

Abstract

We investigate the effect of the axion cooling on the nucleosynthesis in a massive star with $16M_{\odot }$ by standard stellar evolution calculation. We find that the axion cooling suppresses the nuclear reactions in carbon, oxygen and silicon burning phases because of the extraction of the energy. As a result, larger amounts of the already synthesized neon and magnesium remain without being consumed to produce further heavier elements. Even in the case with the axion-photon coupling constant $g_{a\gamma }=10^{-11}$ GeV${}^{-1}$, which is six times smaller than the current upper limit, the amount of neon and magnesium that remain just before the core-collapse supernova explosion is considerably larger than the standard value. This implies that we could give a more stringent constraint on $g_{a\gamma }$ from the nucleosynthesis of heavy elements in massive stars.

5 pages, 5 figures, submitted to Physical Review D

References in corpus (3)

• Modules for Experiments in Stellar Astrophysics (MESA)
• Revisiting the bound on axion-photon coupling from Globular Clusters
• Constraining the Axion-Photon Coupling with Massive Stars

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• The treatment of mixing in core helium burning models -- II. Constraints from cluster star counts
• Constraining axion-like particles using the white dwarf initial-final mass relation
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