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Evidence for particle acceleration approaching PeV energies in the W51 complex
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; Celli, S.35
发表期刊SCIENCE BULLETIN
2024-09
卷号69期号:18页码:2833-2841
DOI10.1016/j.scib.2024.07.017
产权排序第25完成单位
收录类别SCI
关键词UHE gamma-ray Cosmic rays SNR W51C Star clusters
摘要The gamma-ray emission from the W51 complex is widely acknowledged to be attributed to the interaction between the cosmic rays (CRs) accelerated by the shock of supernova remnant (SNR) W51C and the dense molecular clouds in the adjacent star-forming region, W51B. However, the maximum acceleration capability of W51C for CRs remains elusive. Based on observations conducted with the Large High Altitude Air Shower Observatory (LHAASO), we report a significant detection of gamma rays emanating from the W51 complex, with energies from 2 to 200 TeV. The LHAASO measurements, for the first time, extend the gamma-ray emission from the W51 complex beyond 100 TeV and reveal a significant spectrum bending at tens of TeV. By combining the ''pi(0)-decay bump featured data from Fermi-LAT, the broadband gamma-ray spectrum of the W51 region can be well-characterized by a simple pp-collision model. The observed spectral bending feature suggests an exponential cutoff at similar to 400 TeV or a power-law break at similar to 200 TeV in the CR proton spectrum, most likely providing the first evidence of SNRs serving as CR accelerators approaching the PeV regime. Additionally, two young star clusters within W51B could also be theoretically viable to produce the most energetic gamma rays observed by LHAASO. Our findings strongly support the presence of extreme CR accelerators within the W51 complex and provide new insights into the origin of Galactic CRs. (c) 2024 Science China Press. Published by Elsevier B.V. and Science China Press. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
资助项目National Natural Science Foundation of China[12393851,12261160362]; National Natural Science Foundation of China[12393852]; National Natural Science Foundation of China[12393853]; National Natural Science Foundation of China[12393854]; National Natural Science Foundation of China[12022502]; National Natural Science Foundation of China[2205314]; National Natural Science Foundation of China[12105301]; National Natural Science Foundation of China[12105292]; National Natural Science Foundation of China[12105294]; National Natural Science Foundation of China[12005246]; National Natural Science Foundation of China[12173039]; Department of Science and Technology of Sichuan Province[24NSFJQ0060]; Department of Science and Technology of Sichuan Province[2024NSFSC0449]; Project for Young Scientists in Basic Research of Chinese Academy of Sciences[YSBR-061]; Project for Young Scientists in Basic Research of Chinese Academy of Sciences[2022010]; National Science and Technology Development Agency (NSTDA); National Research Council of Thailand (NRCT): High-Potential Research Team Grant Program[N42A650868]; Chengdu Management Committee of Tianfu New Area; National Key R&D Program of China[2023YFA1608000]; National Key R&D Program of China[2017YFA0402701]; CAS Key Research Program of Frontier Sciences[QYZDJ-SSW-SLH047]
项目资助者National Natural Science Foundation of China[12393851,12261160362, 12393852, 12393853, 12393854, 12022502, 2205314, 12105301, 12105292, 12105294, 12005246, 12173039] ; Department of Science and Technology of Sichuan Province[24NSFJQ0060, 2024NSFSC0449] ; Project for Young Scientists in Basic Research of Chinese Academy of Sciences[YSBR-061, 2022010] ; National Science and Technology Development Agency (NSTDA) ; National Research Council of Thailand (NRCT): High-Potential Research Team Grant Program[N42A650868] ; Chengdu Management Committee of Tianfu New Area ; National Key R&D Program of China[2023YFA1608000, 2017YFA0402701] ; CAS Key Research Program of Frontier Sciences[QYZDJ-SSW-SLH047]
语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学
文章类型Article
出版者ELSEVIER
出版地RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
ISSN2095-9273
URL查看原文
WOS记录号WOS:001366059700001
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
关键词[WOS]TEV GAMMA-RAYS ; SUPERNOVA REMNANT ; MOLECULAR CLOUD ; CRAB-NEBULA ; EMISSION ; CLUSTERS
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文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/27827
专题星系类星体研究组
南方基地
其他
作者单位1.Key Laboratory of Particle Astrophysics & Experimental Physics Division & Computing Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
2.University of Chinese Academy of Sciences, Beijing 100049, China;
3.TIANFU Cosmic Ray Research Center, Chengdu, China;
4.Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, 2 Dublin, Ireland;
5.Max-Planck-Institut for Nuclear Physics, P.O. Box 103980, Heidelberg 69029, Germany;
6.School of Physical Science and Technology & School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China;
7.School of Astronomy and Space Science, Nanjing University, Nanjing 210023, China;
8.Center for Astrophysics, Guangzhou University, Guangzhou 510006, China;
9.Tsung-Dao Lee Institute & School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China;
10.Institute for Nuclear Research of Russian Academy of Sciences, Moscow 117312, Russia;
11.Hebei Normal University, Shijiazhuang 050024, China;
12.University of Science and Technology of China, Hefei 230026, China;
13.State Key Laboratory of Particle Detection and Electronics, China;
14.Key Laboratory of Dark Matter and Space Astronomy & Key Laboratory of Radio Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, China;
15.Research Center for Astronomical Computing, Zhejiang Laboratory, Hangzhou 311121, China;
16.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China;
17.School of Physics and Astronomy, Yunnan University, Kunming 650091, China;
18.Key Laboratory of Cosmic Rays (Tibet University), Ministry of Education, Lhasa 850000, China;
19.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China;
20.School of Physics and Astronomy (Zhuhai) & School of Physics (Guangzhou) & Sino-French Institute of Nuclear Engineering and Technology (Zhuhai), Sun Yat-sen University, Zhuhai 519000 & Guangzhou 510275, Guangdong, China;
21.Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, China;
22.APC, Université Paris Cité, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Paris 119 75205, France;
23.Department of Engineering Physics, Tsinghua University, Beijing 100084, China;
24.School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China;
25.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
26.China Center of Advanced Science and Technology, Beijing 100190, China;
27.College of Physics, Sichuan University, Chengdu 610065, China;
28.School of Physics, Peking University, Beijing 100871, China;
29.Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Nanning 530004, China;
30.Department of Physics, Faculty of Science, Mahidol University, Bangkok 10400, Thailand;
31.Moscow Institute of Physics and Technology, Moscow 141700, Russia;
32.Center for Relativistic Astrophysics and High Energy Physics, School of Physics and Materials Science & Institute of Space Science and Technology, Nanchang University, Nanchang 330031, China;
33.National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China;
34.School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China;
35.Department of Physics, Sapienza University of Rome, Piazzale Aldo Moro 2, Rome 00185, Italy
推荐引用方式
GB/T 7714		 Cao, Zhen,Aharonian, F.,Axikegu,et al. Evidence for particle acceleration approaching PeV energies in the W51 complex[J]. SCIENCE BULLETIN,2024,69(18):2833-2841.
APA Cao, Zhen.,Aharonian, F..,Axikegu.,Bai, Y.X..,Bao, Y.W..,...&Celli, S..(2024).Evidence for particle acceleration approaching PeV energies in the W51 complex.SCIENCE BULLETIN,69(18),2833-2841.
MLA Cao, Zhen,et al."Evidence for particle acceleration approaching PeV energies in the W51 complex".SCIENCE BULLETIN 69.18(2024):2833-2841.
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