Radiative neutrino decay and the unusual X-ray flux from Sn 1987A

T. Hatsuda, C. S. Lim, M. Yoshimura

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The radiative neutrino decay in the mass and a lifetime range, mv=10-100 keV and τv=103-105 s, is often argued to be forbid by γ-ray data from past supernovas. We demonstrate that this argument is not always correct, and accordingly attempt to explain via radiative neutrino decay the unusual soft component of the X-ray spectrum from SN 1987A, observed by the satellite Ginga. Our fit to the data suggests that τv=(1-3)×104s·(mv/50 keV).

Original languageEnglish
Pages (from-to)462-468
Number of pages7
JournalPhysics Letters B
Issue number4
Publication statusPublished - Apr 7 1988
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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