Massive Dirac neutrinos and SN 1987A

Adam S. Burrows, Raj Gandhi, Michael S. Turner

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)3834-3837
Number of pages4
JournalPhysical review letters
Volume68
Issue number26
DOIs
StatePublished - Jan 1 1992

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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