{"paper":{"title":"Gamma-ray Showers Observed at Ground Level in Coincidence With Downward Lightning Leaders","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","hep-ex"],"primary_cat":"physics.ao-ph","authors_text":"A. Oshima, A. Taketa, B.G. Cheon, B.K. Shin, B.T. Stokes, C.C.H. Jui, D.C. Rodriguez, D. Ikeda, D. Ivanov, D.R. Bergman, D. Rodeheffer, D. Ryu, E. Barcikowski, E. Kido, F. Kakimoto, F. Shibata, F. Urban, G.B. Thomson, G. Furlich, G. Rubtsov, G. Vasiloff, H.B. Kim, H. Ito, H. Kawai, H. Ohoka, H. Sagawa, H. Shimodaira, H.S. Shin, H. Takai, H. Tanaka, H. Tokuno, H. Yamaoka, H. Yoshii, I.H. Park, I. Myers, I. Tkachev, J. Chiba, J.D. Smith, J.H. Kim, J. Lan, J.N. Matthews, J.P. Lundquist, J. Remington, J.W. Belz, J. Yang, K. Hibino, K. Honda, K. Kadota, K. Kasahara, K. Kawata, K. Machida, K. Martens, K. Mukai, K. Oki, K. Saito, K. Sekino, K. Tanaka, K. Yamazaki, K. Yashiro, M. Allen, M. Byrne, M. Chikawa, M. Fukushima, M. Minamino, M. Ohnishi, M. Ono, M.S. Pshirkov, M. Takeda, M. Takita, M. Tanaka, M. Yamamoto, N. Hayashida, N. Inoue, N. Sakaki, N. Sakurai, O. Kalashev, P.D. Shah, P.R. Krehbiel, P. Sokolsky, P. Tinyakov, R. Cady, R.J. Thomas, R. LeVon, R. Nakamura, R. Onogi, R. Takeishi, R.U. Abbasi, R.W. Springer, R. Yamane, S.A. Blake, S.B. Thomas, S. Jeong, S. Kawakami, S. Nagataki, S. Ogio, S. Ozawa, S.S. Kishigami, S. Troitsky, S. Udo, S. Yoshida, T.Abu-Zayyad, T.A. Stroman, T. Fujii, T. Goto, T. Ishii, T. Matuyama, T. Nakamura, T. Nonaka, T. Okuda, T. Seki, T. Shibata, T. Tomida, T. Wong, V. Kuzmin, W. Hanlon, W. Rison, Y. Hayashi, Y.J. Kwon, Y. Tameda, Y. Tsunesada, Y. Uchihori, Y. Yoneda, Z. Zundel","submitted_at":"2017-05-17T16:49:35Z","abstract_excerpt":"Bursts of gamma ray showers have been observed in coincidence with downward propagating negative leaders in lightning flashes by the Telescope Array Surface Detector (TASD). The TASD is a 700~square kilometer cosmic ray observatory located in southwestern Utah, U.S.A. In data collected between 2014 and 2016, correlated observations showing the structure and temporal development of three shower-producing flashes were obtained with a 3D lightning mapping array, and electric field change measurements were obtained for an additional seven flashes, in both cases co-located with the TASD. National L"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.06258","kind":"arxiv","version":3},"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"}