First Detection of Photons with Energy Beyond 100 TeV from an Astrophysical Source
High Energy Astrophysical Phenomena
2019-08-06 v1
Abstract
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 muon number measured in an air shower, we successfully suppress 99.92% of the cosmic-ray background events with energies TeV. As a result, we observed 24 photon-like events with TeV against 5.5 background events, which corresponds to 5.6 statistical significance. This is the first detection of photons with TeV from an astrophysical source.
Keywords
Cite
@article{arxiv.1906.05521,
title = {First Detection of Photons with Energy Beyond 100 TeV from an Astrophysical Source},
author = {M. 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 Q. B. Gou and Y. Q. Guo and H. H. He and Z. T. He and K. Hibino and N. Hotta and Haibing Hu and H. B. Hu and J. Huang and H. Y. Jia and L. Jiang and H. B. Jin and F. Kajino and K. Kasahara and Y. Katayose and C. Kato and S. Kato and K. Kawata and M. Kozai and Labaciren and G. M. 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 K. Munakata and Y. Nakamura and H. Nanjo and M. Nishizawa and M. Ohnishi and I. Ohta and S. Ozawa and X. L. Qian and X. B. Qu and T. Saito and M. Sakata and T. K. Sako and Y. Sengoku and J. Shao and M. Shibata and A. Shiomi and H. Sugimoto and M. Takita and Y. H. Tan and N. Tateyama and S. Torii and H. Tsuchiya and S. Udo and H. Wang and H. R. Wu and L. Xue and K. Yagisawa and Y. Yamamoto and Z. Yang and A. F. Yuan and L. M. 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= {arXiv preprint arXiv:1906.05521},
year = {2019}
}
Comments
April 4, 2019; Submitted to the Physical Review Letters