{"paper":{"title":"New analysis of the SN 1987A neutrinos with a flexible spectral shape","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph","authors_text":"A.Mirizzi (Bari U. & INFN, Bari & Munich, G.G.Raffelt (Max Planck Inst., Max Planck Inst.), Munich)","submitted_at":"2005-08-29T17:39:26Z","abstract_excerpt":"We analyze the neutrino events from the supernova (SN) 1987A detected by the Kamiokande II (KII) and Irvine-Michigan-Brookhaven (IMB) experiments. For the time-integrated flux we assume a quasi-thermal spectrum of the form $(E/E_0)^\\alpha e^{-(\\alpha+1)E/E_0}$ where $\\alpha$ plays the role of a spectral index. This simple representation not only allows one to fit the total energy $E_{\\rm tot}$ emitted in $\\bar\\nu_e$ and the average energy $<E_{\\bar\\nu_e}>$, but also accommodates a wide range of shapes, notably anti-pinched spectra that are broader than a thermal distribution. We find that the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0508612","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/0508612/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"}