The performance of the LHAASO-KM2A tested by the cosmic-ray Moon shadow
文献类型：会议论文
| 作者 | Nan, Yuncheng1,2; Li, Zhe2; Chen, Songzhan2; Feng, Cunfeng1; Wu, Sha2; Li, Yizhuo2; Cao, Zhen3,4,5; Aharonian, F.6,7; An, Q.8,9; Axikegu10 |
| 出版日期 | 2022-03-18 |
| 会议日期 | 2021-07-12 |
| 会议地点 | Virtual, Berlin, Germany |
| 卷号 | 395 |
| DOI | 10.22323/1.395.0350 |
| 英文摘要 | The KM2A is a major ground-based array for the researches on cosmic rays around the "knee" region and the ultra high energy gamma-ray astronomy, which depends heavily on its performance. The half array of the KM2A has been operated from December 27, 2019 to November 30, 2020. The cosmic ray Moon shadow, which moves between ±25 of declination and is observed with significance up to -25 standard deviation each month, is used as an unique and powerful source to test the array’s performance. Through the observation of the characteristics of the Moon shadow, including the position displacement, shape, deficit, and their variation with the time and energy, we test the pointing error, angular resolution, long-term stability of the KM2A and the absolute energy scale of the primary cosmic-ray particles. In particular, the pointing errors for showers from different declinations are discussed in this work. © Copyright owned by the author(s). |
| 产权排序 | 第31完成单位 |
| 资助机构 | National Natural Science Foundation of China[11575203,11775131] |
| 会议录 | Proceedings of Science
 |
| 会议录出版者 | Sissa Medialab Srl |
| 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 ; 核科学技术 |
| 语种 | 英语 |
| URL标识 | 查看原文 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/25729]  |
| 专题 | 星系类星体研究组 |
| 作者单位 | 1.Shandong University, Institute of Frontier and Interdisciplinary Science, 72, Binhai Road, Jimo, Shandong, Qingdao, China; 2.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, CAS, 19-yi, Yuquan Road, Shijingshan District, Beijing, China; 3.Key Laboratory of Particle Astrophyics, Experimental Physics Division, Computing Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; 4.University of Chinese Academy of Sciences, Beijing, 100049, China; 5.TIANFU Cosmic Ray Research Center, Sichuan, Chengdu, China; 6.Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, 2, Dublin, Ireland; 7.Max-Planck-Institut for Nuclear Physics, P.O. Box 103980, Heidelberg, 69029, Germany; 8.State Key Laboratory of Particle Detection and Electronics, China; 9.University of Science and Technology of China, Anhui, Hefei, 230026, China; 10.School of Physical Science and Technology, School of Information Science and Technology, Southwest Jiaotong University, Sichuan, Chengdu, 610031, China; |
| 推荐引用方式 GB/T 7714 | Nan, Yuncheng,Li, Zhe,Chen, Songzhan,et al. The performance of the LHAASO-KM2A tested by the cosmic-ray Moon shadow[C]. 见:. Virtual, Berlin, Germany. 2021-07-12. |
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来源：云南天文台
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