{"paper":{"title":"Ultra-Relativistic Magnetic Monopole Search with the ANITA-II Balloon-borne Radio Interferometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Connolly, A. G. Vieregg, A. Javaid, A. Romero-Wolf, B. Baughmann, B. C. Mercurio, B. Hill, C. Chen, C. Frankenfeld, C. Miki, D. Besson, D. DeMarco, D. P. Hogan, D. Saltzberg, D. Seckel, E. W. Grashorn, G. S. Varner, J. J. Beatty, J. M. Clem, J. Nam, K. Belov, K. M. Liewer, K. Palladino, L. Ruckman, M. A. DuVernois, M. Detrixhe, M. H. Israel, M. Mottram, N. Griffith, P. Allison, P. Chen, P. F. Dowkontt, P. W. Gorham, R. J. Nichol, S. Bevan, S. Hoover, S. Matsuno, W. R. Binns, Y. Wang","submitted_at":"2010-08-06T21:46:36Z","abstract_excerpt":"We have conducted a search for extended energy deposition trails left by ultra-relativistic magnetic monopoles interacting in Antarctic ice. The non-observation of any satisfactory candidates in the 31 days of accumulated ANITA-II flight data results in an upper limit on the diffuse flux of relativistic monopoles. We obtain a 90% C.L. limit of order 10^{-19}/(cm^2-s-sr) for values of Lorentz boost factor 10^{10}<gamma at the anticipated energy E=10^{16} GeV. This bound is stronger than all previously published experimental limits for this kinematic range."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.1282","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"}