{"paper":{"title":"First HAWC Observations of the Sun Constrain Steady TeV Gamma-Ray Emission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR","hep-ph"],"primary_cat":"astro-ph.HE","authors_text":"A. Albert, A. Carrami\\~nana, A. H. G. Peter, A. Iriarte, A. Jardin-Blicq, A.J. Smith, A. Nayerhoda, A. Sandoval, A. Zepeda, B. Hona, B.L. Dingus, B. Zhou, C. Alvarez, C. Brisbois, C. de Le\\'on, C.D. Rho, C. Espinoza, C. Rivi\\`ere, D. Avila Rojas, D. Rosa-Gonz\\'alez, E. Belmont-Moreno, E. De la Fuente, E.G. P\\'erez-P\\'erez, E. Moreno, E. Ruiz-Velasco, F. Garfias, F. Hueyotl-Zahuantitla, F. Salesa Greus, G. Luis-Raya, G. Sinnis, H.A. Ayala Solares, H. Fleischhack, H. Le\\'on Vargas, H. Salazar, H. Schoorlemmer, H. Zhou, I.G. Wisher, I. Martinez-Castellanos, I. Taboada, I. Torres, J.A. Garc\\'ia-Gonz\\'alez, J.A. Goodman, J.C. Arteaga-Vel\\'azquez, J.C. D\\'iaz-V\\'elez, J. Cotzomi, J.D. \\'Alvarez, J. F. Beacom, J. Lundeen, J. Mart\\'inez-Castro, J.P. Harding, J. Pretz, J. Wood, K. C. Y. Ng, K. Engel, K. Malone, K.S. Caballero-Mora, K. Tollefson, L. Nellen, L. Villase\\~nor, M.A. DuVernois, M. Castillo, M.M. Gonz\\'alez, M. Mostaf\\'a, M. Newbold, M. Rosenberg, M. Schneider, M. Seglar Arroyo, M.U. Nisa, N. Fraija, O. Enr\\'iquez-Rivera, O. Martinez, O. Tibolla, P. H\\\"untemeyer, P. Miranda-Romagnoli, P. Surajbali, R. Alfaro, R. Arceo, R. K. Leane, R. L\\'opez-Coto, R. Noriega-Papaqui, S. Casanova, S. Couti\\~no de Le\\'on, S. Dichiara, S. Hernandez, S. Kaufmann, S.S. Marinelli, S. Westerhoff, S.Y. BenZvi, T. Capistr\\`an, T. Linden, T. Weisgarber, T. Yapici, V. Joshi, Z. Hampel-Arias, Z. Ren","submitted_at":"2018-08-16T18:00:02Z","abstract_excerpt":"Steady gamma-ray emission up to at least 200 GeV has been detected from the solar disk in the Fermi-LAT data, with the brightest, hardest emission occurring during solar minimum. The likely cause is hadronic cosmic rays undergoing collisions in the Sun's atmosphere after being redirected from ingoing to outgoing in magnetic fields, though the exact mechanism is not understood. An important new test of the gamma-ray production mechanism will follow from observations at higher energies. Only the High Altitude Water Cherenkov (HAWC) Observatory has the required sensitivity to effectively probe th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.05620","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"}