Flux variations of cosmic ray air showers detected by LHAASO-KM2A during thunderstorms
文献类型：会议论文
| 作者 | Zhou, Xunxiu25; Yang, Ci25; Chen, Xuejian25; Huang, Daihui25; Cao, Zhen20,21,22; Aharonian, F.18,19; An, Q.16,17; Axikegu15; Bai, Y. X.20,22; Bao, Y. W.14 |
| 出版日期 | 2024-09-27 |
| 会议日期 | 2023-07-26 |
| 会议地点 | Nagoya, Japan |
| 卷号 | 444 |
| DOI | 10.22323/1.444.0255 |
| 英文摘要 | The Large High Altitude Air Shower Observatory (LHAASO) has three sub-arrays, KM2A, WCDA and WFCTA, located at 4410 m above sea level in Sichuan Province, China. The high-altitude location and the frequent occurrence of thunderstorms make LHAASO suitable to study the effects of atmospheric electric fields (AEFs) on cosmic ray air showers. By analyzing the data of KM2A, the flux variations of cosmic ray air showers during thunderstorms are studied. The total number of shower events that meet the KM2A trigger conditions increases significantly during thunderstorms, with the maximum value exceeding 20%. The variations of trigger rates are found to be strongly dependent on the primary zenith angle. To understand the shower rate changes, the flux variations of ground-level secondary particles are analyzed. We find the average number of particles per shower event increases significantly in strong AEFs. Due to the acceleration by AEFs, the number of secondary particles with energy above the detector threshold increases, and then more shower events satisfy the trigger conditions, resulting in the shower rate increases. At the same time, the secondary particles carrying positive and negative charges will be deflected in opposite direction in AEFs, and this effect increases with the zenith angle. As a result, the flux variations of shower events detected by KM2A are correlated with the primary direction. © Copyright owned by the author(s) under the terms of the Creative Commons. |
| 产权排序 | 第24完成单位 |
| 资助机构 | National Natural Science Foundation of China[U2031101] ; National Key Research and Development Program of China[2018YFA0404201] |
| 会议录 | Proceedings of Science
 |
| 文献子类 | Conference article (CA) |
| 学科主题 | 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[U2031101];National Key Research and Development Program of China[2018YFA0404201] |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/27916]  |
| 专题 | 星系类星体研究组 |
| 作者单位 | 1.School of Physics and Microelectronics, Zhengzhou University, Henan, Zhengzhou, 450001, China; 2.APC, Université Paris Cité, CNRS, IN2P3, CEA, IRFU, Observatoire de Paris, Paris, 119 75205, France; 3.Institute of Frontier and Interdisciplinary Science, Shandong University, Shandong, Qingdao, 266237, China; 4.Département de Physique Nucléaire et Corpusculaire, Faculté de Sciences, Université de Genève, 24 Quai Ernest Ansermet, Geneva, 1211, Switzerland; 5.School of Physics and Astronomy, Yunnan University, Yunnan, Kunming, 650091, China; 6.School of Physics and Astronomy, Sun Yat-sen University, Guangdong, Zhuhai, 519000, China; 7.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China; 8.Key Laboratory of Cosmic Rays (Tibet University), Ministry of Education, Tibet, Lhasa, 850000, China; 9.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai, 200030, China; 10.Tsung-Dao Lee Institute, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, China; |
| 推荐引用方式 GB/T 7714 | Zhou, Xunxiu,Yang, Ci,Chen, Xuejian,et al. Flux variations of cosmic ray air showers detected by LHAASO-KM2A during thunderstorms[C]. 见:. Nagoya, Japan. 2023-07-26. |
入库方式： OAI收割
来源：云南天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。