{"paper":{"title":"Discovery of VHE $\\gamma$-ray emission from the SNR G54.1+0.3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Cesarini, A. Furniss, A. Imran, A. Konopelko, A. McCann, A. N. Otte, A. Weinstein, A. W. Smith, B. Zitzer, C. Duke, C. M. Hui, D. A. Williams, D. Boltuch, D. Gall, D. Hanna, D. Kieda, D. Pandel, D. Steele, E. Aliu, E. Roache, E. V. Gotthelf, F. Krennrich, G. Demet Senturk, G. Finnegan, G. Gyuk, G. H. Gillanders, G. H. Sembroski, G. Maier, G. T\\v{e}si\\'c, H. J. Rose, H. Krawczynski, J. E. Ward, J. Grube, J. H. Buckley, J. Holder, J. P. Finley, J. Quinn, J. S. Perkins, K. Byrum, K. Ragan, L. Ciupik, L. C. Reyes, L. Fortson, M. Bautista, M. Beilicke, M. J. Lang, M. Kertzman, M. McCutcheon, M. Pohl, M. Schroedter, M. Theiling, M. Wood, N. Galante, N. Karlsson, P. Kaaret, P. Moriarty, P. Slane, P. T. Reynolds, R. A. Ong, R. Dickherber, R. Guenette, R. Muhkerjee, S. Godambe, S. LeBohec, S. M. Bradbury, S. McArthur, S. P. Swordy, S. P. Wakely, S. Thibadeau, S. Vincent, S. Wissel, T. Arlen, T. Aune, T. B. Humensky, T. C. Weekes, T. Weisgarber, V. A. Acciari, V. Bugaev, V. V. Vassiliev, W. Benbow, W. Cui, Y. Butt","submitted_at":"2010-04-30T23:39:07Z","abstract_excerpt":"We report the discovery of very high energy gamma-ray emission from the direction of the SNR G54.1+0.3 using the VERITAS ground-based gamma-ray observatory. The TeV signal has an overall significance of 6.8$\\sigma$ and appears point-like given the 5$^{arcminute}$ resolution of the instrument. The integral flux above 1 TeV is 2.5% of the Crab Nebula flux and significant emission is measured between 250 GeV and 4 TeV, well described by a power-law energy spectrum dN/dE $\\sim$ E$^{-\\Gamma}$ with a photon index $\\Gamma= 2.39\\pm0.23_{stat}\\pm0.30_{sys}$. We find no evidence of time variability amon"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.0032","kind":"arxiv","version":4},"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"}