Accès ouvert déclaré
2022
preprint
Flux Variations of Cosmic Ray Air Showers Detected by LHAASO-KM2A During a Thunderstorm on 10 June 2021
LHAASO Collaboration, F. Aharonian, Q. An, Axikegu, Lixin Bai, Y. W. Bao, D. Bastieri, Xiao-Jun Bi, Y. J. Bi, J. T. Cai, Zhe Cao, Z. Cao, Jin Chang, J. F. Chang, E. S. Chen, Liang Chen, Long Chen, M. J. Chen, M. L. Chen, S. H. Chen, S. Z. Chen, T.L Chen, X. J. Chen, Y. Chen, H. L. Cheng, Nianliang Cheng, Yaodong Cheng, S. W. Cui, X. H. Cui, Y. D. Cui, B Z Dai, Zi-Gao Dai, Danzengluobu Danzengluobu, D. della Volpe, K. K. Duan, J. H. Fan, Yi-Zhong Fan, Z. X. Fan, Jun Fang, Kun Fang, C. Feng, Feng Li, X. T. Feng, Y. L. Feng, B. S. Gao, C. D. Gao, L. Q. Gao, Qi Gao, Wei Gao, W. K. Gao, M. M. Ge, Li‐Sheng Geng, G.H Gong, Q. B. Gou, M. H. Gu, Feng Gu, J. G. Guo, X. L. Guo, Yi-Qing Guo, Y. Y. Guo, Y. A. Han, H. H. He, Hao-Ning He, S. L. He, X. B. He, Yun He, M. Heller, Y. K. Hor, C. Hou, Xin Hou, H. B. Hu, Q. Hu, Siyu Hu, S. C. Hu, X. Hu, D. Huang, Wenhao Huang, X. T. Huang, X. Y. Huang, Yufei Huang, Zhi-Qiu Huang, X. L. Ji, H. Y. Jia, Kun Jia, K. Jiang, Z. J. Jiang, Mingzhou Jin, M. M. Kang, T. Ke, D. Kuleshov, Bingliang Li, Cheng Li, Cong Li, F. Li, H. B. Li, H. C. Li, Huanhuan Li, Jiangnan Li, Jian Li, Jie Li, Ke Li, W. L. Li, X. R. Li, Xin Li, Xin Li, Y. Z. Li, Zhe Li, Zhuo Li, En‐Wei Liang, Liang Yu, S. J. Lin, Baolin Liu, C. Liu, Dawei Liu, Hengyi Liu, H. D. Liu, J. Liu, J. L. Liu, J. S. Liu, J. Y. Liu, M. Y. Liu, Rui Liu, S. M. Liu, Wei Liu, Y. Liu, Y. N. Liu, W. J. Long, R. Lu, Qingming Luo, H. K. Lv, B. Q., L. L., Xiaohong Ma, J. R. Mao, A. Masood, Z. Min, W. Mitthumsiri, Y. C. Nan, Z. W. Ou, B. Y. Pang, P. Pattarakijwanich, Z. Y. Pei, M. Qi, Yicong Qi, Bing-Qiang Qiao, Jiajun Qin, D. Ruffolo, A. Sáiz, C. Y. Shao, L. Shao, O. Shchegolev, X. D. Sheng, Jianzheng Shi, H. C. Song, Yu. V. Stenkin, V. Stepanov, Yang Su, Q. N. Sun, X. N. Sun, Z. B. Sun, P. H. T. Tam, Z. B. Tang, W.W. Tian, B. D. Wang, C. Wang, H. Wang, H. G. Wang, J. C. Wang, J. S. Wang, L. P. Wang, L.Y Wang, Rong Wang, Ruijian Wang, W. Wang, X. G. Wang, X. Y. Wang, Y. Wang, Y. D. Wang, Y. J. Wang, Ying‐Ping Wang, Zhiliang Wang, Zhen Wang, Z. Wang, Da-Ming Wei, Jun-Jie Wei, Y. Wei, Tao Wen, C. Y. Wu, Honghong Wu, Songhua Wu, Xue-Feng Wu, Y. S. W, Shichuan Xi, Jianxin Xia, J. Xia, G. M. Xiang, D. X. Xiao, G. Xiao, G. G. Xin, Y. Xin, Y. Xing, Z. Xiong, D. L. Xu, Renxin Xu, Likun Xue, Dahai Yan, J. Z. Yan, C. W. Yang, Fang Yang, H. W. Yang, Jiaqi Yang, Lili Yang, Min Yang, Ruizhi Yang, S. B. Yang, Yuhua Yao, Z. G. Yao, Yueyao Ye, L. Q. Yin, N. Yin, X. H. You, Z. Y. You, Y. H. Yu, Qiangqiang Yuan, H. Yue, Houdun Zeng, T. X. Zeng, Wen Zeng, Z. K. Zeng, M. Zha, X. X. Zhai, B. B. Zhang, Fei Zhang, H. M. Zhang, H. Y. Zhang, J. L. Zhang, Li Zhang, Lu Zhang, P. F. Zhang, Peter Zhang, Renjian Zhang, S. B. Zhang, S. R. Zhang, S. S. Zhang, Xiao Zhang, X. P. Zhang, Y. F. Zhang, Y. L. Zhang, Yi Zhang, Yong Zhang, Bin Zhao, J. Z. Zhao, Le Zhao, Linlin Zhao, S. P. Zhao, Feihu Zheng, Y. G. Zheng, B. Zhou, H. Zhou, J. N. Zhou, Ping Zhou, Rong Zhou, Xuyang Zhou, C. G. Zhu, F. R. Zhu, Haomiao Zhu, K. J. Zhu, Xu Zuo
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Le résumé fourni par la source
The Large High Altitude Air Shower Observatory (LHAASO) has three sub-arrays, KM2A, WCDA and WFCTA. The flux variations of cosmic ray air showers were studied by analyzing the KM2A data during the thunderstorm on 10 June 2021. The number of shower events that meet the trigger conditions increases significantly in atmospheric electric fields, with maximum fractional increase of 20%. The variations of trigger rates (increases or decreases) are found to be strongly dependent on the primary zenith angle. The flux of secondary particles increases significantly, following a similar trend with that of the shower events. To better understand the observed behavior, Monte Carlo simulations are performed with CORSIKA and G4KM2A (a code based on GEANT4). We find that the experimental data (in saturated negative fields) are in good agreement with simulations, assuming the presence of a uniform upward electric field of 700 V/cm with a thickness of 1500 m in the atmosphere above the observation level. Due to the acceleration/deceleration and deflection by the atmospheric electric field, the number of secondary particles with energy above the detector threshold is modified, resulting in the changes in shower detection rate.
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Les sujets associés
Astrophysics and Cosmic PhenomenaLightning and Electromagnetic PhenomenaPrecipitation Measurement and Analysis