{"paper":{"title":"Gamma Rays and the Decay of Neutrinos from SN1987A","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph","authors_text":"A. Jaffe (CITA), Fermilab), M.S. Turner (Chicago","submitted_at":"1996-01-19T19:21:38Z","abstract_excerpt":"We calculate limits to the properties of massive, unstable neutrinos using data from gamma-ray detectors on the Pioneer Venus Orbiter Satellite; a massive neutrino emitted from SN1987A that decayed in flight and produced gamma rays would be detectable by this instruments. The lack of such a signal allows us to constrain the branching ratio to photons ($\\Bg$), mass ($\\mnu$), and radiative lifetime ($\\tau_\\gamma = \\tau/\\Bg$). For low mass ($m<T\\sim8\\MeV$) neutrinos decaying $\\nu\\rightarrow\\nu'\\gamma$, $\\Bg<3\\times 10^{-7}$, for $\\mt\\lesssim 10^6 \\keV\\sec$, and $\\Bg<6\\times 10^{-14} \\mt/\\keV\\sec$"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9601104","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/9601104/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}