دورية أكاديمية
Measurements of All-Particle Energy Spectrum and Mean Logarithmic Mass of Cosmic Rays from 0.3 to 30 PeV with LHAASO-KM2A
| العنوان: | Measurements of All-Particle Energy Spectrum and Mean Logarithmic Mass of Cosmic Rays from 0.3 to 30 PeV with LHAASO-KM2A |
|---|---|
| المؤلفون: | Cao, Zhen, Aharonian, F, An, Q, Axikegu, A, Bai, Y.X, Bao, Y.W, Bastieri, D, Bi, X.J, Bi, Y.J, Bian, W, Bukevich, A.V, Cao, Q, Cao, W.Y, Cao, Zhe, Chang, J, Chang, J.F, Chen, A.M, Chen, E.S, Chen, H.X, Chen, Liang, Chen, Lin, Chen, Long, Chen, M.J, Chen, M.L, Chen, Q.H, Della Volpe, D, Gao, L.Q, He, X.B, Heller, M, Ke, T, Li, H.Y, Li, W.L, Liu, J.Y, Lu, R, Ou, Z.W, Pang, B.Y, Qi, Y.Q, Shao, C.Y, Chen, S.H, Chen, S.Z, Chen, T.L, Chen, Y, Cheng, N, Cheng, Y.D, Cui, M.Y, Cui, S.W, Cui, X.H, Cui, Y.D, Dai, B.Z, Dai, H.L, Dai, Z.G, Danzengluobu, M, Dong, X.Q, Duan, K.K, Fan, J.H, Fan, Y.Z, Fang, J, Fang, J.H, Fang, K, Feng, C.F, Feng, H, Feng, L, Feng, S.H, Feng, X.T, Feng, Y, Feng, Y.L, Gabici, S, Gao, B, Gao, C.D, Gao, Q, Gao, W, Gao, W.K, Ge, M.M, Geng, L.S, Giacinti, G, Gong, G.H, Gou, Q.B, Gu, M.H, Guo, F.L, Guo, X.L, Guo, Y.Q, Guo, Y.Y, Han, Y.A, Hasan, M, He, H.H, He, H.N, He, J.Y, He, Y, Hor, Y.K, Hou, B.W, Hou, C, Hou, X, Hu, H.B, Hu, Q, Hu, S.C, Huang, D.H, Huang, T.Q, Huang, W.J, Huang, X.T, Huang, X.Y, Huang, Y, Ji, X.L, Jia, H.Y, Jia, K, Jiang, K, Jiang, X.W, Jiang, Z.J, Jin, M, Kang, M.M, Karpikov, I, Kuleshov, D, Kurinov, K, Li, B.B, Li, C.M, Li, Cheng, Li, Cong, Li, D, Li, F, Li, H.B, Li, H.C, Li, Jian, Li, Jie, Li, K, Li, S.D, Li, X.R, Li, Xin, Li, Y.Z, Li, Zhe, Li, Zhuo, Liang, E.W, Liang, Y.F, Lin, S.J, Liu, B, Liu, C, Liu, D, Liu, D.B, Liu, H, Liu, H.D, Liu, J, Liu, J.L, Liu, M.Y, Liu, R.Y, Liu, S.M, Liu, W, Liu, Y, Liu, Y.N, Luo, Q, Luo, Y, Lv, H.K, Ma, B.Q, Ma, L.L, Ma, X.H, Mao, J.R, Min, Z, Mitthumsiri, W, Mu, H.J, Nan, Y.C, Neronov, A, Ou, L.J, Pattarakijwanich, P, Pei, Z.Y, Qi, J.C, Qi, M.Y, Qiao, B.Q, Qin, J.J, Raza, A, Ruffolo, D, Sáiz, A, Saeed, M, Semikoz, D, Shao, L, Shchegolev, O, Sheng, X.D, Shu, F.W, Song, H.C, Stenkin, Yu.V, Stepanov, V, Su, Y, Sun, D.X, Sun, Q.N, Sun, X.N, Sun, Z.B, Takata, J, Tam, P.H.T, Tang, Q.W, Tang, R, Tang, Z.B, Tian, W.W, Wang, C, Wang, C.B, Wang, G.W, Wang, H.G, Wang, H.H, Wang, J.C, Wang, K, Wang, L.P, Wang, L.Y, Wang, P.H, Wang, R, Wang, W, Wang, X.G, Wang, X.Y, Wang, Y, Wang, Y.D, Wang, Y.J, Wang, Z.H, Wang, Z.X, Wang, Zhen, Wang, Zheng, Wei, D.M, Wei, J.J, Wei, Y.J, Wen, T, Wu, C.Y, Wu, H.R, Xia, J.J, Wu, Q.W, Wu, S, Wu, X.F, Wu, Y.S, Xi, S.Q, Xia, J, Xiang, G.M, Xiao, D.X, Xiao, G, Xin, G.G, Xin, Y.L, Xing, Y, Xiong, D.R, Xiong, Z, Xu, D.L, Xu, R.F, Xu, R.X, Xu, W.L, Xue, L, Yan, D.H, Yan, J.Z, Yan, T, Yang, C.W, Yang, H.W, Yang, J.Y, Yang, C.Y, Yang, F, Yang, F.F, Yang, L.L, Yang, M.J, Yang, R.Z, Yang, S.B, Ye, Y.M, Yang, W.X, Yao, Y.H, Yao, Z.G, Yin, L.Q, Yin, N, You, X.H, You, Z.Y, Yu, Y.H, Yuan, Q, Yue, H, Zeng, H.D, Zeng, T.X, Zeng, W, Zha, M, Zhang, B.B, Zhang, F, Huang, Z.C, Zhang, H.M, Zhang, H.Y, Zhang, J.L, Zhang, L.X, Zhang, Li, Zhang, P.F, Zhang, P.P, Zhang, R, Zhang, S.B, Zhang, S.R, Zhang, S.S, Zhang, X, Zhang, X.P, Zhang, Y.F, Zhang, Yi, Zhang, Yong, Zhao, B, Zhao, J, Zhao, L, Zhao, L.Z, Zhao, S.P, Zhao, X.H, Zheng, F, Zhong, W.J, Zhou, B, Zhou, H, Zhou, J.N, Zhou, M, Zhou, P, Zhou, R, Zhou, X.X, Zhu, B.Y, Zhu, C.G, Zhu, F.R, Zhu, H, Zhu, K.J, Zou, Y.C, Zuo, X |
| المساهمون: | AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), LHAASO |
| المصدر: | ISSN: 0031-9007. |
| بيانات النشر: | HAL CCSD American Physical Society |
| سنة النشر: | 2024 |
| مصطلحات موضوعية: | cosmic radiation, mass, error, statistical, energy spectrum, power spectrum, helium, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
| الوصف: | International audience ; 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. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/arxiv/2403.10010; hal-04523061; https://hal.science/hal-04523061Test; ARXIV: 2403.10010; INSPIRE: 2769270 |
| DOI: | 10.1103/PhysRevLett.132.131002 |
| الإتاحة: | https://doi.org/10.1103/PhysRevLett.132.131002Test https://hal.science/hal-04523061Test |
| رقم الانضمام: | edsbas.DCF0AD97 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1103/PhysRevLett.132.131002 |
|---|