Neutrino-induced nucleosynthesis and the site of the r-process
Astrophysics
2009-10-28 v1 Nuclear Theory
Abstract
If the r-process occurs deep within a Type II supernova, probably the most popular of the proposed sites, abundances of r-process elements may be altered by the intense neutrino flux. We point out that the effects would be especially pronounced for 8 isotopes that can be efficiently synthesized by the neutrino reactions following r-process freeze-out. We show that the observed abundances of these isotopes are entirely consistent with neutrino-induced nucleosynthesis, strongly arguing for a supernova r-process site. The deduced fluences place stringent constraints on the freeze-out radius and dynamic timescale of the r-process.
Cite
@article{arxiv.astro-ph/9612047,
title = {Neutrino-induced nucleosynthesis and the site of the r-process},
author = {W. C. Haxton and K. Langanke and Y. -Z. Qian and P. Vogel},
journal= {arXiv preprint arXiv:astro-ph/9612047},
year = {2009}
}
Comments
11 pages, 2 Postscript figures, RevTex