{"paper":{"title":"Swift and XMM-Newton Observations of the Extraordinary GRB 060729: An afterglow with a more than 100 days X-ray light curve","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Andy Beardmore (U Leicester), Bing Zhang (Univ of NV), Caryl Gronwall (PSU), Daniel vanden Berk (PSU), David Morris (PSU), David N. Burrows (PSU), Dirk Grupe (PSU), Guido Chincarini (INAF-OAB), Jay Cummings (NASA/GSFC), John A. Nousek (PSU), Julian Osborne (U Leicester), Kim Page (U Leicester), Margaret McMath Chester (PSU), Maria Diaz Trigo (ESO/SCIOPS), Michael Stroh (PSU), Neil Gehrels (NASA/GSFC), Olivier Godet (U Leicester), Patrizia Romano INAF-OAB), Paul T. O'Brien (U Leicester), Peter Brown (PSU), Peter Meszaros (PSU, Peter Roming (PSU), Scott Koch (PSU), Stefan Immler (NASA/GSFC), Takanori Sakamoto (NASA/GSFC), Vanessa Mangano (INAF-OAB), Xiang-Yu Wang (PSU)","submitted_at":"2006-11-07T21:06:08Z","abstract_excerpt":"We report the results of the Swift and XMM observations of the Swift-discovered long Gamma-Ray Burst GRB 060729 ($T_{90}$=115s). The afterglow of this burst was exceptionally bright in X-rays as well as at UV/Optical wavelengths showing an unusually long slow decay phase ($\\alpha$=0.14\\plm0.02) suggesting a larger energy injection phase at early times than in other bursts. The X-ray light curve displays a break at about 60 ks after the burst. The X-ray decay slope after the break is $\\alpha$=1.29\\plm0.03. Up to 125 days after the burst we do not detect a jet break, suggesting that the jet open"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0611240","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":""},"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"}