{"paper":{"title":"The Giant X-ray Flare of GRB 050502B: Evidence for Late-Time Internal Engine Activity","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. A. Wells, A. D. Falcone, A. Moretti, A. P. Beardmore, B. Zhang, C. Pagani, D. Grupe, D. Lazzati, D. N. Burrows, G. Chincarini, G. Cusumano, G. Tagliaferri, J. A. Kennea, J. A. Nousek, J. E. Hill, J. P. Osborne, K. L. Page, L. Angelini, M. Capalbi, M. Perri, M. R. Goad, N. Gehrels, O. Godet, P. Giommi, P. Meszaros, P. Romano, P. T. O'Brien, S. Campana, S. Kobayashi, V. La Parola, V. Mangano","submitted_at":"2005-12-27T05:40:08Z","abstract_excerpt":"Until recently, X-ray flares during the afterglow of gamma ray bursts (GRBs) were a rarely detected phenomenon, thus their nature is unclear. During the afterglow of GRB 050502B, the largest X-ray flare ever recorded rose rapidly above the afterglow lightcurve detected by the Swift X-ray Telescope. The peak flux of the flare was >500 times that of the underlying afterglow, and it occurred at >12 minutes after the nominal prompt burst emission. The fluence of this X-ray flare, (1.0 +/- 0.05) x 10^{-6} erg cm^{-2} in the 0.2-10.0 keV energy band, exceeded the fluence of the nominal prompt burst."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0512615","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/astro-ph/0512615/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"}