Neutrino temperatures and fluxes from the LMC supernova

Details Neutrino temperatures and fluxes from the LMC supernova Neutrino temperatures and fluxes from the LMC supernova

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.327..682b&link_type=abstract

Nature (ISSN 0028-0836), vol. 327, June 25, 1987, p. 682-685. NSF-supported research.

Physics

67

Magellanic Clouds, Neutrinos, Particle Energy, Supernovae, Weak Interactions (Field Theory), Angular Distribution, Scattering Cross Sections, Spectral Energy Distribution, Statistical Analysis

Scientific paper

A combined analysis of the angular and energy distributions of the LMC supernova events observed in the Kamiokande and the IMB detectors is presented which determines the effective temperatures and fluxes of neutrinos and antineutrinos produced by the explosion. The main result is that a simple model is consistent with the available data and in reasonable agreement with conventional models of supernova explosions. The parameters of this model are: a single temperature of 4.1 + 1.0 or - 0.4 MeV, a flux of electron antineutrinos of (0.5 + 0.2 or - 0.35) x 10 to the 10th/sq cm, and a poorly determined flux of 'scattered' neutrinos = (0.2 - 5) x 10 to the 10th/sq cm. Limits are also set on possible high-temperature fluxes of neutrinos or antineutrinos that might result from matter oscillations.

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