Neutrino-induced nucleosynthesis of A>64 nuclei: the nu p process |
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Authors: | Fröhlich C Martínez-Pinedo G Liebendörfer M Thielemann F-K Bravo E Hix W R Langanke K Zinner N T |
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Affiliation: | Departement für Physik und Astronomie, Universit?t Basel, CH-4056 Basel, Switzerland. |
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Abstract: | We present a new nucleosynthesis process that we denote as the nu p process, which occurs in supernovae (and possibly gamma-ray bursts) when strong neutrino fluxes create proton-rich ejecta. In this process, antineutrino absorptions in the proton-rich environment produce neutrons that are immediately captured by neutron-deficient nuclei. This allows for the nucleosynthesis of nuclei with mass numbers A>64, , making this process a possible candidate to explain the origin of the solar abundances of (92,94)Mo and (96,98)Ru. This process also offers a natural explanation for the large abundance of Sr seen in a hyper-metal-poor star. |
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