Institutional Repository System Of Yunnan Observatories, CAS
| Measurements of All-Particle Energy Spectrum and Mean Logarithmic Mass of Cosmic Rays from 0.3 to 30 PeV with LHAASO-KM2A | |
Cao, Zhen1,2,3; Aharonian, F.4,5; Axikegu6; Bai, Y. X.1,3; Bao, Y. W.7; Bastieri, D.8; Bi, X. J.1,2,3; Bi, Y. J.1,3; Bian, W.9; Bukevich, A. V.10; Cao, Q.11; Cao, W. Y.12; Cao, Zhe12,13; Chang, J.14; Chang, J. F.1,3,13; Chen, A. M.9; Chen, E. S.1,2,3; Chen, H. X.15; Chen, Liang16; Chen, Lin6; Chen, Long6; Chen, M. J.1,3; Chen, M. L.1,3,13; Chen, Q. H.6; Chen, S.17; Chen, S. H.1,2,3; Chen, S. Z.1,3; Chen, T. L.18; Chen, Y.7; Cheng, N.1,3; Cheng, Y. D.1,2,3; Cui, M. Y.14; Cui, S. W.11; Cui, X. H.19; Cui, Y. D.20; Dai, B. Z.17; Dai, H. L.1,3,13; Dai, Z. G.12; Danzengluobu18; Dong, X. Q.1,2,3; Duan, K. K.14; Fan, J. H.8; Fan, Y. Z.14; Fang, J.17; Fang, J. H.15; Fang, K.1,3; Feng, C. F.21; Feng, H.1; Feng, L.14; Feng, S. H.1,3; Feng, X. T.21; Feng, Y.15; Feng, Y. L.18; Gabici, S.22; Gao, B.1,3; Gao, C. D.21; Gao, Q.18; Gao, W.1,3; Gao, W. K.1,2,3; Ge, M. M.17; Geng, L. S.1,3; Giacinti, G.9; Gong, G. H.23; Gou, Q. B.1,3; Gu, M. H.1,3,13; Guo, F. L.16; Guo, X. L.6; Guo, Y. Q.1,3; Guo, Y. Y.14; Han, Y. A.24; Hasan, M.1,2,3; He, H. H.1,2,3; He, H. N.14; He, J. Y.14; He, Y.6; Hor, Y. K.20; Hou, B. W.1,2,3; Hou, C.1,3; Hou X(侯贤)25 ; Hu, H. B.1,2,3; Hu, Q.12,14; Hu, S. C.1,3,26; Huang, D. H.6; Huang, T. Q.1,3; Huang, W. J.20; Huang, X. T.21; Huang, X. Y.14; Huang, Y.1,2,3; Ji, X. L.1,3,13; Jia, H. Y.6; Jia, K.21; Jiang, K.12,13; Jiang, X. W.1,3; Jiang, Z. J.17; Jin, M.6; Kang, M. M.27; Karpikov, I.10; Kuleshov, D.10; Kurinov, K.10; Li, B. B.11; Li, C. M.7; Li, Cheng12,13; Li, Cong1,3; Li, D.1,2,3; Li, F.1,3,13; Li, H. B.1,3; Li, H. C.1,3; Li, Jian12; Li, Jie1,3,13; Li, K.1,3; Li, S. D.2,16; Li, W. L.21; Li, W. L.9; Li, X. R.1,3; Li, Xin12,13; Li, Y. Z.1,2,3; Li, Zhe1,3; Li, Zhuo28; Liang, E. W.29; Liang, Y. F.29; Lin, S. J.20; Liu, B.12; Liu, C.1,3; Liu, D.21; Liu, D. B.9; Liu, H.6; Liu, H. D.24; Liu, J.1,3; Liu, J. L.1,3; Liu, M. Y.18; Liu, R. Y.7; Liu, S. M.6; Liu, W.1,3; Liu, Y.8; Liu, Y. N.23; Luo, Q.20; Luo, Y.9; Lv, H. K.1,3; Ma, B. Q.28; Ma, L. L.1,3; Ma, X. H.1,3; Mao JR(毛基荣)25; Min, Z.1,3; Mitthumsiri, W.30; Mu, H. J.24; Nan, Y. C.1,3; Neronov, A.22; Ou, L. J.8; Pattarakijwanich, P.30; Pei, Z. Y.8; Qi, J. C.1,2,3; Qi, M. Y.1,3; Qiao, B. Q.1,3; Qin, J. J.12; Raza, A.1,2,3; Ruffolo, D.30; Sáiz, A.30; Saeed, M.1,2,3; Semikoz, D.22; Shao, L.11; Shchegolev, O.10,31; Sheng, X. D.1,3; Shu, F. W.32; Song, H. C.28; Stenkin, Yu. V.10,31; Stepanov, V.10; Su, Y.14; Sun, D. X.12,14; Sun, Q. N.6; Sun, X. N.29; Sun, Z. B.33; Takata, J.34; Tam, P. H. T.20; Tang, Q. W.32; Tang, R.9; Tang, Z. B.12,13; Tian, W. W.2,19; Wang, C.33; Wang, C. B.6; Wang, G. W.12; Wang, H. G.8; Wang, H. H.20; Wang JC(王建成)25; Wang, Kai7; Wang, Kai34; Wang, L. P.1,2,3; Wang, L. Y.1,3; Wang, P. H.6; Wang, R.21; Wang, W.20; Wang, X. G.29; Wang, X. Y.7; Wang, Y.6; Wang, Y. D.1,3; Wang, Y. J.1,3; Wang, Z. H.27; Wang, Z. X.17; Wang, Zhen9; Wang, Zheng1,3,13; Wei, D. M.14; Wei, J. J.14; Wei, Y. J.1,2,3; Wen, T.17; Wu, C. Y.1,3; Wu, H. R.1,3; Wu, Q. W.34; Wu, S.1,3; Wu, X. F.14; Wu, Y. S.12; Xi, S. Q.1,3; Xia, J.12,14; Xiang, G. M.2,16; Xiao, D. X.11; Xiao, G.1,3; Xin, Y. L.6; Xing, Y.16; Xiong DR(熊定荣)25; Xiong, Z.1,2,3; Xu, D. L.9; Xu, R. F.1,2,3; Xu, R. X.28; Xu, W. L.27; Xue, L.21; Yan, D. H.17; Yan, J. Z.14; Yan, T.1,3; Yang, C. W.27; Yang CY(杨初源)25; Yang, F.11; Yang, F. F.1,3,13; Yang, L. L.20; Yang, M. J.1,3; Yang, R. Z.12; Yang, W. X.8; Yao, Y. H.1,3; Yao, Z. G.1,3; Yin, L. Q.1,3; Yin, N.21; You, X. H.1,3; You, Z. Y.1,3; Yu, Y. H.12; Yuan, Q.14; Yue, H.1,2,3; Zeng, H. D.14; Zeng, T. X.1,3,13; Zeng, W.17; Zha, M.1,3; Zhang, B. B.7; Zhang, F.6; Zhang, H.9; Zhang, H. M.7; Zhang, H. Y.1,3; Zhang, J. L.19; Zhang, Li17; Zhang, P. F.17; Zhang, P. P.12,14; Zhang, R.12,14; Zhang, S. B.2,19; Zhang, S. R.11; Zhang, S. S.1,3; Zhang, X.7; Zhang, X. P.1,3; Zhang, Y. F.6; Zhang, Yi1,14; Zhang, Yong1,3; Zhao, B.6; Zhao, J.1,3; Zhao, L.12,13; Zhao, L. Z.11; Zhao, S. P.14; Zhao XH(赵晓红)25; Zheng, F.33; Zhong, W. J.7; Zhou, B.1,3; Zhou, H.9; Zhou, J. N.16; Zhou, M.32; Zhou, P.7; Zhou, R.27; Zhou, X. X.1,2,3; Zhou, X. X.6; Zhu, B. Y.12,14; Zhu, C. G.21; Zhu, F. R.6; Zhu, H.19; Zhu, K. J.1,2,3,13; Zou, Y. C.34; Zuo, X.1,3
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| 发表期刊 | PHYSICAL REVIEW LETTERS
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| 2024-03-26 | |
| 卷号 | 132期号:13 |
| DOI | 10.1103/PhysRevLett.132.131002 |
| 产权排序 | 第25完成单位 |
| 收录类别 | SCI |
| 摘要 | We present the measurements of all -particle energy spectrum and mean logarithmic mass of cosmic rays in the energy range of 0.3-30 PeV using data collected from LHAASO-KM2A between September 2021 and December 2022, which is based on a nearly composition -independent energy reconstruction method, achieving unprecedented accuracy. Our analysis reveals the position of the knee at 3.67 +/- 0.05 +/- 0.15 PeV. Below the knee, the spectral index is found to be -2.7413 +/- 0.0004 +/- 0.0050, while above the knee, it is -3.128 +/- 0.005 +/- 0.027, with the sharpness of the transition measured with a statistical error of 2%. The mean logarithmic mass of cosmic rays is almost heavier than helium in the whole measured energy range. It decreases from 1.7 at 0.3 PeV to 1.3 at 3 PeV, representing a 24% decline following a power law with an index of -0.1200 +/- 0.0003 +/- 0.0341. This is equivalent to an increase in abundance of light components. Above the knee, the mean logarithmic mass exhibits a power law trend towards heavier components, which is reversal to the behavior observed in the all -particle energy spectrum. Additionally, the knee position and the change in power -law index are approximately the same. These findings suggest that the knee observed in the all -particle spectrum corresponds to the knee of the light component, rather than the medium -heavy components. |
| 资助项目 | National Key R&D program of China[2018YFA0404201]; National Key R&D program of China[2018YFA0404202]; National Key R&D program of China[2018YFA0404203]; National Key R&D program of China[2018YFA0404204]; National Natural Science Foundation of China (NSFC)[12022502]; National Natural Science Foundation of China (NSFC)[12205314]; National Natural Science Foundation of China (NSFC)[12105301]; National Natural Science Foundation of China (NSFC)[12261160362]; National Natural Science Foundation of China (NSFC)[12105294]; National Natural Science Foundation of China (NSFC)[U1931201]; National Natural Science Foundation of China (NSFC)[12175121]; National Natural Science Foundation of China (NSFC)[12275280]; National Research Council of Thailand (NRCT) under the High-Potential Research Team Grant Program[N42A650868] |
| 项目资助者 | National Key R&D program of China[2018YFA0404201, 2018YFA0404202, 2018YFA0404203, 2018YFA0404204] ; National Natural Science Foundation of China (NSFC)[12022502, 12205314, 12105301, 12261160362, 12105294, U1931201, 12175121, 12275280] ; National Research Council of Thailand (NRCT) under the High-Potential Research Team Grant Program[N42A650868] |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 星系与宇宙学 ; 天体物理学 ; 高能天体物理学 |
| 文章类型 | Article |
| 出版者 | AMER PHYSICAL SOC |
| 出版地 | ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA |
| ISSN | 0031-9007 |
| URL | 查看原文 |
| WOS记录号 | WOS:001202259300007 |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 关键词[WOS] | TIBET ; KNEE |
| EI入藏号 | 20241315828324 |
| EI主题词 | Cosmic rays |
| EI分类号 | 657 Space Physics - 657.2 Extraterrestrial Physics and Stellar Phenomena - 944.8 Radiation Measurements |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/26755 |
| 专题 | 星系类星体研究组 |
| 作者单位 | 1.Key Laboratory of Particle Astrophysics and Experimental Physics Division and Computing Center, Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, China; 2.University of Chinese Academy of Sciences, 100049 Beijing, China; 3.Tianfu Cosmic Ray Research Center, 610000 Chengdu, Sichuan, China; 4.Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, 2 Dublin, Ireland; 5.Max-Planck-Institut for Nuclear Physics, P.O. Box 103980, 69029 Heidelberg, Germany; 6.School of Physical Science and Technology and School of Information Science and Technology, Southwest Jiaotong University, 610031 Chengdu, Sichuan, China; 7.School of Astronomy and Space Science, Nanjing University, 210023 Nanjing, Jiangsu, China; 8.Center for Astrophysics, Guangzhou University, 510006 Guangzhou, Guangdong, China; 9.Tsung-Dao Lee Institute and School of Physics and Astronomy, Shanghai Jiao Tong University, 200240 Shanghai, China; 10.Institute for Nuclear Research of Russian Academy of Sciences, 117312 Moscow, Russia; 11.Hebei Normal University, 050024 Shijiazhuang, Hebei, China; 12.University of Science and Technology of China, 230026 Hefei, Anhui, China; 13.State Key Laboratory of Particle Detection and Electronics, China; 14.Key Laboratory of Dark Matter and Space Astronomy and Key Laboratory of Radio Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, 210023 Nanjing, Jiangsu, China; 15.Research Center for Astronomical Computing, Zhejiang Laboratory, 311121 Hangzhou, Zhejiang, China; 16.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 200030 Shanghai, China; 17.School of Physics and Astronomy, Yunnan University, 650091 Kunming, Yunnan, China; 18.Key Laboratory of Cosmic Rays (Tibet University), Ministry of Education, 850000 Lhasa, Tibet, China; 19.National Astronomical Observatories, Chinese Academy of Sciences, 100101 Beijing, China; 20.School of Physics and Astronomy (Zhuhai) and School of Physics (Guangzhou) and Sino-French Institute of Nuclear Engineering and Technology (Zhuhai), Sun Yat-sen University, 519000 Zhuhai and 510275 Guangzhou, Guangdong, China; 21.Institute of Frontier and Interdisciplinary Science, Shandong University, 266237 Qingdao, Shandong, China; 22.APC, Université Paris Cité, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, 119 75205 Paris, France; 23.Department of Engineering Physics, Tsinghua University, 100084 Beijing, China; 24.School of Physics and Microelectronics, Zhengzhou University, 450001 Zhengzhou, Henan, China; 25.Yunnan Observatories, Chinese Academy of Sciences, 650216 Kunming, Yunnan, China; 26.China Center of Advanced Science and Technology, Beijing 100190, China; 27.College of Physics, Sichuan University, 610065 Chengdu, Sichuan, China; 28.School of Physics, Peking University, 100871 Beijing, China; 29.Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, 530004 Nanning, Guangxi, China; 30.Department of Physics, Faculty of Science, Mahidol University, Bangkok 10400, Thailand; 31.Moscow Institute of Physics and Technology, 141700 Moscow, Russia; 32.Center for Relativistic Astrophysics and High Energy Physics, School of Physics and Materials Science and Institute of Space Science and Technology, Nanchang University, 330031 Nanchang, Jiangxi, China; 33.National Space Science Center, Chinese Academy of Sciences, 100190 Beijing, China; 34.School of Physics, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China |
| 推荐引用方式 GB/T 7714 | Cao, Zhen,Aharonian, F.,Axikegu,et al. Measurements of All-Particle Energy Spectrum and Mean Logarithmic Mass of Cosmic Rays from 0.3 to 30 PeV with LHAASO-KM2A[J]. PHYSICAL REVIEW LETTERS,2024,132(13). |
| APA | Cao, Zhen.,Aharonian, F..,Axikegu.,Bai, Y. X..,Bao, Y. W..,...&Zuo, X..(2024).Measurements of All-Particle Energy Spectrum and Mean Logarithmic Mass of Cosmic Rays from 0.3 to 30 PeV with LHAASO-KM2A.PHYSICAL REVIEW LETTERS,132(13). |
| MLA | Cao, Zhen,et al."Measurements of All-Particle Energy Spectrum and Mean Logarithmic Mass of Cosmic Rays from 0.3 to 30 PeV with LHAASO-KM2A".PHYSICAL REVIEW LETTERS 132.13(2024). |
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