{"paper":{"title":"When Did the Remnant of GW170817 Collapse to a Black Hole?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Antonios Nathanail, Luciano Rezzolla, Ramandeep Gill","submitted_at":"2019-01-14T05:35:44Z","abstract_excerpt":"The main hard pulse of prompt gamma-ray emission in GRB$\\,$170817A had a duration of $\\sim0.5\\,{\\rm s}$ and its onset was delayed with respect to the gravitational-wave chirp signal by $t_{\\rm del} \\approx 1.74\\,{\\rm s}$. Detailed follow-up of the subsequent broadband kilonova emission revealed a two-component ejecta -- a lanthanide-poor ejecta with mass $M_{\\rm ej,blue}\\approx0.025\\,M_\\odot$ that powered the early but rapidly fading blue emission and a lanthanide-rich ejecta with mass $M_{\\rm ej,red}\\approx 0.04\\,M_\\odot$ that powered the longer lasting redder emission. Both the prompt gamma-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.04138","kind":"arxiv","version":2},"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"}