{"paper":{"title":"GRB 061121: Broadband spectral evolution through the prompt and afterglow phases of a bright burst","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"1), (10) MSSL, (11) University of Michigan, (12) INAF-IASF, (13) Pennsylvania State University, (14) XMM-Newton Science Operations Centre, (15) MIT, (16) Louisiana State University), (2) University of Nevada, (3) NASA/GSFC, (4) Liverpool John Moores University, (5) University of Denver, 6), (6) Stanford University, (7) Ioffe Physico-Technical Institute, (8) Osservatorio Astronomico di Brera, 9), (9) Universita' di Milano-Bicocca, A. Melandri (4), A.P. Beardmore (1), B.E. Schaefer (16), B. Zhang (2), C. Guidorzi (8, C. Mundell (4), D.N. Burrows (13), E. Rol (1), E. Troja (1, F.E. Marshall (3), F. Yuan (11), G. Cusumano (12), G. Ricker (15), H. Ziaeepour (9) ((1) University of Leicester, J.P. Norris (5, J.P. Osborne (1), K.L. Page (1), M. De Pasquale (10), M. Ehle (14), M.J. Page (10), M.R. Goad (1), M. Stamatikos (3), M.Ulanov (7), N. Gehrels (3), O. Godet (1), P.A. Evans (1), P. Romano (8, P. Schady (10), P.T. O'Brien (1), R.L.C. Starling (1), R. Willingale (1), S.A. Yost (11), S.D. Barthelmy (3), Sezione di Palermo, S. Golenetskii (7), T. Sakamoto (3), V. Pal'shin (7)","submitted_at":"2007-04-12T16:14:23Z","abstract_excerpt":"Swift triggered on a precursor to the main burst of GRB 061121 (z=1.314), allowing observations to be made from the optical to gamma-ray bands. Many other telescopes, including Konus-Wind, XMM-Newton, ROTSE and the Faulkes Telescope North, also observed the burst. The gamma-ray, X-ray and UV/optical emission all showed a peak ~75s after the trigger, although the optical and X-ray afterglow components also appear early on - before, or during, the main peak. Spectral evolution was seen throughout the burst, with the prompt emission showing a clear positive correlation between brightness and hard"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0704.1609","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":""},"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"}