{"paper":{"title":"Nuclear properties in early stages of stellar collapse","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Ray, F. K. Sutaria, J. A. Sheikh, P. Ring","submitted_at":"1999-06-29T20:26:20Z","abstract_excerpt":"The spectroscopy of electron capture neutrinos emitted from nearby pre-supernova collapsing stars before the neutrino trapping sets in, can yield useful information on the physical conditions and on the nuclear composition of the core. The neutrino spectrum depends on the thermodynamic conditions of the core, the nuclear abundances, the lepton fractions and relevant nuclear properties. In the pre-trapping core of a core-collapse supernova, the density ranges from $0.1 - 100~10^{10}$ g/cm$^3$ and the temperature from $0.2 - 1.5$ MeV. The nuclear abundances as well as the electron capture rates "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9906482","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":""},"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"}