{"paper":{"title":"Constraints on the ejecta of the GW170817 neutron-star merger from its electromagnetic emission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Avishay Gal-Yam (WIS), Doron Kushnir, Eli Waxman, Eran Ofek","submitted_at":"2017-11-27T12:04:47Z","abstract_excerpt":"We present a simple analytic model, that captures the key features of the emission of radiation from material ejected by the merger of neutron stars (NS), and construct the multi-band and bolometric luminosity light curves of the transient associated with GW170817, AT\\,2017gfo, using all available data. The UV to IR emission is shown to be consistent with a single $\\approx0.05$\\,M$_\\odot$ component ejecta, with a power-law velocity distribution between $\\approx 0.1\\,c$ and $>0.3\\,c$, a low opacity, {$\\kappa<1$\\,cm$^2$\\,g$^{-1}$}, and a radioactive energy release rate consistent with an initial"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.09638","kind":"arxiv","version":3},"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"}