{"paper":{"title":"The Troublesome Broadband Evolution of GRB 061126: Does a Grey Burst Imply Grey Dust?","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. H. Szentgyorgyi, A. V. Filippenko, C. H. Blake, D. A. Perley, D. Kocevski, D. Starr, E. Bellm, E. E. Falco, H.-W. Chen, J. Holtzman, J. Pergande, J. S. Bloom, J. Wren, J. X. Prochaska, L. K. Pollack, N. R. Butler, P. R. Wozniak, R. J. Foley, R. White, W. Li, W. T. Vestrand","submitted_at":"2007-03-20T21:03:07Z","abstract_excerpt":"We report on observations of a gamma-ray burst (GRB 061126) with an extremely bright (R ~ 12 mag at peak) early-time optical afterglow. The optical afterglow is already fading as a power law 22 seconds after the trigger, with no detectable prompt contribution in our first exposure, which was coincident with a large prompt-emission gamma-ray pulse. The optical--infrared photometric spectral energy distribution is an excellent fit to a power law, but it exhibits a moderate red-to-blue evolution in the spectral index at about 500 s after the burst. This color change is contemporaneous with a swit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0703538","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"}