Constraining the Spectrum of Supernova Neutrinos from v-Process Induced Light Element Synthesis

Authors

Takashi Yoshida, Astronomical Institute, Graduate School of Science, Tohoku University
Toshitaka Kajino, National Astronomical Observatory of Japan and Graduate University forAdvanced Studies & Department of Astronomy, Graduate School of Science, University of Tokyo
Dieter H. Hartmann, Department of Physics and Astronomy, Clemson UniversityFollow

Document Type

Article

Publication Date

1-17-2014

Publication Title

Physical Review Letters

Publisher

American Physical Society

Abstract

We constrain energy spectra of supernova neutrinos through the avoidance of an overproduction of the 11B abundance during Galactic chemical evolution. In supernova nucleosynthesis calculations with a parametrized neutrino spectrum as a function of temperature of νµ,τ and ¯ νµ,τ and total neutrino energy, we find a strong neutrino temperature dependence of the 11B yield. When the yield is combined with observed abundances, the acceptable range of the νµ,τ and ¯νµ,τ temperature is found to be 4.8 to 6.6 MeV. Nonzero neutrino chemical potentials would reduce this temperature range by about 10% for a degeneracy parameter ην = µν/kTν smaller than 3.

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