First Detection of Photons with Energy beyond 100 TeV from an Astrophysical Source.

M Amenomori, Y W Bao,X J Bi, D Chen,T L Chen,W Y Chen,Xu Chen,Y Chen, Cirennima, S W Cui, Danzengluobu, L K Ding, J H Fang, K Fang, C F Feng,Zhaoyang Feng,Z Y Feng,Qi Gao, Q B Gou,Y Q Guo,H H He,Z T He,K Hibino,N Hotta,Haibing Hu,H B Hu,J Huang, H Y Jia,L Jiang, H B Jin,F Kajino,K Kasahara,Y Katayose, C Kato, S Kato,K Kawata, M Kozai, Labaciren,G M Le,A F Li,H J Li,W J Li,Y H Lin,B Liu,C Liu,J S Liu,M Y Liu,Y-Q Lou,H Lu,X R Meng, H Mitsui,K Munakata,Y Nakamura, H Nanjo, M Nishizawa,M Ohnishi,I Ohta,S Ozawa, X L Qian, X B Qu,T Saito, M Sakata, T K Sako, Y Sengoku,J Shao,M Shibata,A Shiomi,H Sugimoto,M Takita,Y H Tan,N Tateyama,S Torii,H Tsuchiya,S Udo,H Wang,H R Wu, L Xue, K Yagisawa,Y Yamamoto,Z Yang, A F Yuan, L M Zhai,H M Zhang,J L Zhang,X Zhang,X Y Zhang,Y Zhang,Yi Zhang,Ying Zhang, Zhaxisangzhu,X X Zhou,

Physical review letters（2019）

引用 172|浏览3

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摘要

We report on the highest energy photons from the Crab Nebula observed by the Tibet air shower array with the underground water-Cherenkov-type muon detector array. Based on the criterion of a muon number measured in an air shower, we successfully suppress 99.92% of the cosmic-ray background events with energies E>100 TeV. As a result, we observed 24 photonlike events with E>100 TeV against 5.5 background events, which corresponds to a 5.6σ statistical significance. This is the first detection of photons with E>100 TeV from an astrophysical source.

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