{"paper":{"title":"Exceptionally bright optical emission from a rare and distant $\\gamma-$ray burst","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Alexey Perkov, Anton Biryukov, Biswajit Banerjee, Cyril Pol\\'a\\v{s}ek, Elena Katkova, Eugeny Ivanov, Gor Oganesyan, Gregory Beskin, Jakub Jury\\v{s}ek, Jan Ebr, Jan \\v{S}trobl, Marica Branchesi, Martin Jel\\'inek, Martin Ma\\v{s}ek, Michael Prouza, Nadezhda Lyapshina, Petr Jane\\v{c}ek, Ren\\'e Hudec, Ronan Cunniffe, Samuele Ronchini, Sergey Karpov, Vyacheslav Sasyuk","submitted_at":"2021-08-31T18:00:03Z","abstract_excerpt":"Long $\\rm \\gamma$-ray bursts (GRBs) are produced by the dissipation of ultra-relativistic jets launched by newly-born black holes after the collapse of massive stars. Right after the luminous and highly variable $\\gamma$-ray emission, the multi-wavelength afterglow is released by the external dissipation of the jet in circumburst medium. We report the discovery of a very bright ($\\rm \\sim 10$ mag) optical emission $\\rm \\sim 28$ s after the explosion of the extremely luminous and energetic GRB 210619B located at redshift 1.937. Early multi-filter observations allowed us to witness the end of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.00010","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2109.00010/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"}