{"paper":{"title":"GRB 080913 at redshift 6.7","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.J. Levan, A. Kuepcue Yoldas, A.P. Beardmore, A. Rossi, A. Yoldas, B.B. Zhang, B. Milvang-Jensen, B. Zhang, C. Clemens, D.A. Kann, D.H. Hartmann, D. Malesani, D.N. Burrows, D. Pierini, D. Watson, E. Jehin, E.W. Liang, G. Hasinger, G. Szokoly, H. Terada, J. Greiner, J. Hjorth, J.P.U. Fynbo, K. Aoki, K. Toma, K. Wiersema, N. Gehrels, N. Kawai, N.R. Tanvir, P. Afonso, P. Ferrero, P. Meszaros, P.M. Vreeswijk, P. Schady, R. Filgas, R. Schwarz, S.D. Barthelmy, S. Klose, S. McBreen, S.R. Oates, S. Savaglio, S. Schulze, T. Kruehler, T.-S. Pyo, T. Totani, X.F. Wu, Z. Haiman","submitted_at":"2008-10-13T20:59:00Z","abstract_excerpt":"We report on the detection by Swift of GRB 080913, and subsequent optical/near-infrared follow-up observations by GROND which led to the discovery of its optical/NIR afterglow and the recognition of its high-z nature via the detection of a spectral break between the i' and z' bands. Spectroscopy obtained at the ESO-VLT revealed a continuum extending down to lambda = 9400 A, and zero flux for 7500 A < lambda<9400 A, which we interpret as the onset of a Gunn-Peterson trough at z=6.695+-0.025 (95.5% conf. level), making GRB 080913 the highest redshift GRB to date, and more distant than the highes"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.2314","kind":"arxiv","version":1},"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/0810.2314/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"}