Supernova SN1987A Bound on Neutrino Spectra for R-Process Nucleosynthesis

Abstract

The neutrino driven wind during a core collapse supernova is an attractive site for r-process nucleosynthesis. The electron fraction $Y_e$ in the wind depends on observable neutrino energies and luminosities. The mean antineutrino energy is limited by supernova SN1987A data while lepton number conservation constrains the ratio of antineutrino to neutrino luminosities. If $Y_e$, in the wind, is to be suitable for rapid neutron capture nucleosynthesis, then the mean electron neutrino energy may be significantly lower then that predicted in present supernova simulations, or there may be new neutrino physics such as oscillations to sterile neutrinos.

arXiv comment5 pages, 1 fig, more discussion of time dependence, Phys. Rev. D in press

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Cited by in corpus (8)

• Composition of the Innermost Core Collapse Supernova Ejecta
• r-Process Nucleosynthesis: Connecting Rare-Isotope Beam Facilities with the Cosmos
• Flavor oscillations in the supernova hot bubble region: Nonlinear effects of neutrino background
• Pasta Nucleosynthesis: Molecular dynamics simulations of nuclear statistical equilibrium
• Charged current neutrino interactions in core-collapse supernovae in a virial expansion
• Nuclear pasta and supernova neutrinos at late times
• Parity Violation in Astrophysics
• Astrophysical and Cosmological Constraints on Neutrino masses