Lightning-related cosmic ray air shower flashes detected by LHAASO-KM2A
文献类型：会议论文
| 作者 | Cao, Zhen2,3,4; Aharonian, F.4,5,6,7; Bai, Y. X.2,4; Bao, Y. W.8; Bastieri, D.9; Bi, X. J.2,3,4; Bi, Y. J.2,4; Bian, W.8; Bukevich, A. V.10; Cai, C. M.11 |
| 出版日期 | 2025-12-30 |
| 会议日期 | 2025-07-15 |
| 会议地点 | Geneva, Switzerland |
| 卷号 | 501 |
| DOI | 10.22323/1.501.0279 |
| 英文摘要 | Lightning is a common electrical discharge phenomenon in the atmosphere, which involves processes of lightning leader and return stroke. The strength of the atmospheric electric field (AEF) in the leader can be up to 3000-4000 V/cm. In such a strong field, the relativistic runaway electron avalanche (RREA) mechanism could be initiated by the secondary electrons in extensive air shower (EAS). A large number of electrons and bremsstrahlung photons are produced in RREA process. These particles associated with downward lightning leader can be detected by ground-based experiments. As a sub-array of LHAASO, KM2A contains 5216 electromagnetic particle detectors (EDs) and 1188 muon detectors (MDs). The high altitude of LHAASO (4410 m a.s.l.) and the large area of KM2A (1.3 km2), made LHAASO-KM2A suitable to study the lightning-related cosmic ray air shower flashes (referred as TGF-like, similar to the TGF detected by satellite-based experiment). In this work, by analyzing the KM2A data and the information about thunderstorm/lightning at LHAASO site, the characteristics of candidate TGF-like events (such as intensity variations and spatiotemporal distributions) are studied. It can be found that the flux increases abruptly. The temporal distribution becomes notably broader, with several hundred microseconds in duration. The spatial distribution becomes diffuse, even covering the entire KM2A array. These results offer valuable insights into the variation of KM2A data, and provide important information to study the lightning flashes in the atmosphere. © Copyright owned by the author(s) |
| 产权排序 | 第27完成单位 |
| 资助机构 | National Natural Science Foundation of China[12375102, U2031101] |
| 会议录 | Proceedings of Science
 |
| 文献子类 | Conference article (CA) - |
| 学科主题 | 物理学 ; 高能物理学 ; 天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学 |
| 语种 | 英语 |
| URL标识 | 查看原文 |
| 资助项目 | National Natural Science Foundation of China[12375102];National Natural Science Foundation of China[U2031101] |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28941]  |
| 专题 | 星系类星体研究组 |
| 作者单位 | 1.School of Physics, Huazhong University of Science and Technology, Hubei, Wuhan, 430074, China 2.Key Laboratory of Particle Astrophysics & Experimental Physics Division & Computing Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; 3.University of Chinese Academy of Sciences, Beijing, 100049, China; 4.TIANFU Cosmic Ray Research Center, Sichuan, Chengdu, China; 5.University of Science and Technology of China, Anhui, Hefei, 230026, China; 6.Yerevan State University, 1 Alek Manukyan Street, Yerevan, 0025, Armenia; 7.Max-Planck-Institut for Nuclear Physics, P.O. Box 103980, Heidelberg, 69029, Germany; 8.Tsung-Dao Lee Institute, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, China; 9.Center for Astrophysics, Guangzhou University, Guangdong, Guangzhou, 510006, China; 10.Institute for Nuclear Research of Russian Academy of Sciences, Moscow, 117312, Russia; |
| 推荐引用方式 GB/T 7714 | Cao, Zhen,Aharonian, F.,Bai, Y. X.,et al. Lightning-related cosmic ray air shower flashes detected by LHAASO-KM2A[C]. 见:. Geneva, Switzerland. 2025-07-15. |
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来源：云南天文台
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