Analysis of the neutrino events from supernova 1987A

Details Analysis of the neutrino events from supernova 1987A Analysis of the neutrino events from supernova 1987A

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...340..426l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 340, May 1, 1989, p. 426-434.

Astronomy and Astrophysics

Astronomy

48

Neutrinos, Neutron Stars, Spectrum Analysis, Supernova 1987A, Thermal Emission, Black Holes (Astronomy), Monte Carlo Method, Protostars, Statistical Analysis

Scientific paper

Neutrinos observed from SN 1987A are interpreted in terms of thermal emission from a cooling protoneutron star. Using both moment and maximum-likelihood methods, the average temperature of the emitted antineutrinos is inferred to be 3-5 MeV, and the total energy emitted in electron antineutrinos is estimated to be 5 + or - 2 x 10 to the 52nd ergs. Care has been taken to include the detector response function, which improves, marginally, the agreement between the two detections analyzed. Also investigated was the statistical significance of the so-called gaps in the arrival times of the neutrinos. It is argued that these gaps are due to low counting statistics and not to any pulsing or bursting behavior of the source.

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