Evidence for nucleosynthesis in supernova $γ$-process: Universal scaling on p-nuclei

Details Evidence for nucleosynthesis in supernova $γ$-process: Universal scaling on p-nuclei Evidence for nucleosynthesis in supernova $γ$-process: Universal scaling on p-nuclei

2004-09-16

arxiv.org/abs/astro-ph/0409395v2

Phys.Rev.Lett. 93 (2004) 161102

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures. To appear in Phyisical Review Letters, in October

Scientific paper

10.1103/PhysRevLett.93.161102

With analyzing the solar system abundance, we have found two universal scaling laws concerning the p- and s-nuclei. They indicate that the gamma-process in supernova (SN) explosions is the most promising origin of the p-nuclei that has been discussed with many possible nuclear reactions and sites for about fifty years. In addition the scalings provide new concepts: an universality of the gamma-process and a new nuclear cosmochronometer. We have carried out gamma-process nucleosynthesis calculations for typical core-collapse SN explosion models and the results satisfy the observed scalings.

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