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

@article{Amenomori2019FirstDO,
title={First Detection of Photons with Energy beyond 100 TeV from an Astrophysical Source.},
author={Michihiro Amenomori and Y W Bao and X. J. Bi and D Chen and T L Chen and W Y Chen and Xu Chen and Y Chen and Cirennima and S W Cui and Danzengluobu and L K Ding and J H Fang and K. Fang and C F Feng and Zhaoyang Feng and Z Y Feng and Qi Gao and Quan-bu Gou and Y Q Guo and H H He and Z T He and K. Hibino and Naoki Hotta and Haibing Hu and H B Hu and J Huang and H Y Jia and L Jiang and H B Jin and Fumiyoshi Kajino and K. Kasahara and Yusaku Katayose and Chihiro Kato and S Kato and K. Kawata and M. Kozai and Labaciren and Gui-Ming Le and A. F. Li and H J Li and W J Li and Y H Lin and B Liu and C Liu and J S Liu and M Y Liu and Y-Q Lou and H Lu and X R Meng and H. Mitsui and Kouhei Munakata and Y Nakamura and H. Nanjo and Mitsuhiro Yokota Nishizawa and Munehiro Ohnishi and I. Ohta and Shohei Ozawa and X L Qian and X B Qu and T Saito and M. Sakata and Toshiaki Sako and Yasuhito Sengoku and J Shao and M Shibata and Atsushi Shiomi and Hidehiko Sugimoto and Masatoshi Takita and Y H Tan and Nobuhito Tateyama and Shoji Torii and H. Tsuchiya and Sunday O. Udo and H Wang and H R Wu and L Xue and Kazuki Yagisawa and Y Yamamoto and Z Yang and A. F. Yuan and Liuming Zhai and H M Zhang and J L Zhang and X Zhang and X Y Zhang and Y Zhang and Yi Zhang and Ying Zhang and Zhaxisangzhu and X X Zhou},
journal={Physical review letters},
year={2019},
volume={123 5},
pages={
051101
}
}
• M. Amenomori, Y W Bao, +88 authors X X Zhou
• Published 2019
• Physics, Medicine
• Physical review letters
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… Expand

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