{"paper":{"title":"VERITAS Observations of a Very High Energy Gamma-ray Flare from the Blazar 3C 66A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"A. Cannon, A. Cesarini, A. Falcone, A. Furniss, A. Imran, A. Konopelko, A. McCann, A. N. Otte, A. Varlotta, A. Weinstein, A. W. Smith, B. Zitzer, C. M. Hui, D. A. Williams, D. Gall, D. Hanna, D. Horan, D. Kieda, D. Pandel, D. Petry, D. Steele, E. Aliu, E. Hays, E. Roache, F. Krennrich, F. Pizlo, G. Gyuk, G. H. Gillanders, G. H. Sembroski, G. Maier, H. J. Rose, H. Krawczynski, J. A. Toner, J. E. Ward, J. Grube, J. H. Buckley, J. Holder, J. Kildea, J. Millis, J. P. Finley, J. Quinn, J. S. Perkins, K. Byrum, K. Gibbs, K. Ragan, L. Ciupik, L. C. Reyes, L. Fortson, M. Beilicke, M. Bottcher, M. J. Lang, M. K. Daniel, M. Kertzman, M. McCutcheon, M. Pohl, M. Schroedter, M. Theiling, M. Wood, N. Karlsson, O. Celik, P. Cogan, P. Fortin, P. Kaaret, P. Moriarty, P. T. Reynolds, R. A. Ong, R. Dickherber, R. Guenette, R. G. Wagner, R. Mukherjee, S. Godambe, S. J. Fegan, S. LeBohec, S. M. Bradbury, S. P. Swordy, S. P. Wakely, S. Wissel, T. Arlen, T. B. Humensky, T. C. Weekes, T. Ergin, T. Nagai, V. Bugaev, VERITAS Collaboration: V. A. Acciari, V. V. Vassiliev, W. Benbow, W. Cui, Y. Butt, Y. C. Chow","submitted_at":"2009-01-28T18:58:23Z","abstract_excerpt":"The intermediate-frequency peaked BL Lacertae (IBL) object 3C 66A is detected during 2007 - 2008 in VHE (very high energy: E > 100 GeV) gamma-rays with the VERITAS stereoscopic array of imaging atmospheric Cherenkov telescopes. An excess of 1791 events is detected, corresponding to a significance of 21.2 standard deviations (sigma), in these observations (32.8 hours live time). The observed integral flux above 200 GeV is 6% of the Crab Nebula's flux and shows evidence for variability on the time-scale of days. The measured energy spectrum is characterized by a soft power law with photon index "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.4527","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"}