Neutrino-induced nucleosynthesis of A>64 nuclei: the nu p process.
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.
Fröhlich
C
C
Departement für Physik und Astronomie, Universität Basel, CH-4056 Basel, Switzerland.
Martínez-Pinedo
G
G
Liebendörfer
M
M
Thielemann
F-K
FK
Bravo
E
E
Hix
W R
WR
Langanke
K
K
Zinner
N T
NT