{"paper":{"title":"GRB 161219B-SN 2016jca: a powerful stellar collapse","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A.F. Valeev, A.J. Castro-Tirado, A.Levan, A. Melandri, A. Rossi, A.S. Fruchter, A.V.Filippenko, C.Ashall, D.Perley, E.Palazzi, E.Pian, F. Bufano, G. Chincarini, J. Selsing, K. Hurley, K. Nomoto, M. De Pasquale, M.D. Stritzinger, M. Tanaka, P.A. Mazzali, P. D'Avanzo, P. Moller, S. Emery, S.E. Woosley, S. Holmbo, S.J.Prentice, S.Kobayashi, S. Oates, W. Zheng","submitted_at":"2017-02-14T18:52:32Z","abstract_excerpt":"We report observations and analysis of the nearby gamma-ray burst GRB\\,161219B (redshift $z=0.1475$) and the associated Type Ic supernova (SN) 2016jca. GRB\\,161219B had an isotropic gamma-ray energy of $\\sim 1.6 \\times 10^{50}$\\,erg. Its afterglow is likely refreshed at an epoch preceding the first photometric points (0.6\\,d), which slows down the decay rates. Combined analysis of the SN light curve and multiwavelength observations of the afterglow suggest that the GRB jet was broad during the afterglow phase (full opening angle $\\sim 42^\\circ \\pm 3^\\circ$). Our spectral series shows broad abs"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.04339","kind":"arxiv","version":4},"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"}