{"paper":{"title":"GRB 090926A and Bright Late-time Fermi LAT GRB Afterglows","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Maxham, B. B. Zhang, B. Zhang, C. A. Swenson, J. A. Kennea, K. L. Page, L. Vetere, M. De Pasquale, N. P. M. Kuin, P. Schady, P. W. A. Roming, S. R. Oates, S. T. Holland","submitted_at":"2010-04-28T18:05:39Z","abstract_excerpt":"GRB 090926A was detected by both the GBM and LAT instruments on-board the Fermi Gamma-Ray Space Telescope.  Swift follow-up observations began ~13 hours after the initial trigger.  The optical afterglow was detected for nearly 23 days post trigger, placing it in the long lived category.  The afterglow is of particular interest due to its brightness at late times, as well as the presence of optical flares at T0+10^5 s and later, which may indicate late-time central engine activity.  The LAT has detected a total of 16 GRBs; 9 of these bursts, including GRB 090926A, also have been observed by Swi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.5099","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"}