Massive Dirac neutrinos and SN 1987A. [SN 1987a]

Journal Article · Mon Jun 29 04:00:00 EDT 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.3834· OSTI ID:7183618

Burrows, A; Gandhi, R; Turner, M S ^[1]

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1. Department of Physics, University of Arizona, Tucson, Arizona 85721 (United States) NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500 (United States) Department of Physics, The University of Chicago, Chicago, Illinois 60637-1433 (United States) Department of Astronomy Astrophysics, Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637-1433 (United States)

The wrong-helicity states of a Dirac neutrino can provide an important cooling mechanism for young neutron stars. Based on numerical models of the early cooling of the neutron start associated with SN 1987A which self-consistently incorporate wrong-helicity neutrino emission, we argue that a Dirac neutrino of mass greater than 30 keV (25 keV if it is degenerate) leads to shortening of the neutrino burst that is inconsistent with the Irvine-Michigan-Brookhaven and Kamiokande II data. If pions are as abundant as nucleons in the cores of neutron stars, our limit improves to 15 keV.

• OSTI ID: 7183618
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:26; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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ANTIMATTER
ANTINEUTRINOS
ANTIPARTICLES
COOLING
DETECTION
ELEMENTARY PARTICLES
ENERGY RANGE
ERUPTIVE VARIABLE STARS
FERMIONS
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PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
RADIATION DETECTION
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SUPERNOVAE
TEMPERATURE DEPENDENCE
VARIABLE STARS