{"paper":{"title":"Swift observations of GRB050904: the most distant cosmic explosion ever observed","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Panaitescu, A.P. Beardmore, A. Wells, B. Zhang, C. Gronwall, D.M. Palmer, D.N. Burrows, E.E. Fenimore, F. Marshall, G. Chincarini, G. Cusumano, G. Tagliaferri, J.A. Kennea, J.A. Nousek, J.P. Osborne, K. Hurley, K.O. Mason, L. Angelini, L. Cominsky, M. Goad, N.E. White, N. Gehrels, P. Giommi, P. Meszaros, P.T. Boyd, P.W.A. Roming, S. Campana, S.D. Barthelemy, S. Immler, T. Mineo, T. Sakamoto, V. La Parola, V. Mangano","submitted_at":"2006-10-18T21:07:46Z","abstract_excerpt":"Swift discovered the high redshift (z=6.29) GRB050904 with the Burst Alert Telescope (BAT) and began observing with its narrow field instruments 161 s after the burst onset. This gamma-ray burst is the most distant cosmic explosion ever observed. Because of its high redshift, the X-ray Telescope (XRT) and BAT simultaneous observations provide 4 orders of magnitude of spectral coverage (0.2-150 keV; 1.4-1090 keV in the source rest frame) at a very early source-frame time (22 s). GRB050904 was a long, multi-peaked, bright GRB with strong variability during its entire evolution. The light curve o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0610570","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/astro-ph/0610570/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"}