Systematic Study of the Simultaneous Events Detected by GECAM
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arXiv
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2026
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| author | Ren, Yang-Zhao Zhu, Feng-Rong Xiong, Shao-Lin Zhang, Yan-Qiu Wang, Chen-Wei Liu, Jia-Cong Guo, Hao-Xuan Xiao, Shuo Guo, Dong-Ya An, Zheng-Hua Cai, Ce Feng, Pei-Yi Gao, Min Gong, Ke Huang, Yue Li, Bing Li, Xiao-Bo Li, Xin-Qiao Liu, Xiao-Jing Liu, Ya-Qing Ma, Xiang Peng, Wen-Xi Qiao, Rui Song, Li-Ming Sun, Xi-Lei Tan, Wen-Jun Wang, Jin Wang, Jin-Zhou Wang, Ping Wang, Yue Wen, Xiang-Yang Xie, Sheng-Lun Xue, Wang-Chen Yang, Sheng Yi, Qi-Bin Yu, Zheng-Hang Zhang, Da-Li Zhang, Fan Zhang, Hong-Mei Zhang, Jin-Peng Zhang, Peng Zhang, Shuang-Nan Zhang, Wen-Long Zhang, Zhen Zhao, Xiao-Yun Zhao, Yi Zheng, Chao Zheng, Shi-Jie |
| author_facet | Ren, Yang-Zhao Zhu, Feng-Rong Xiong, Shao-Lin Zhang, Yan-Qiu Wang, Chen-Wei Liu, Jia-Cong Guo, Hao-Xuan Xiao, Shuo Guo, Dong-Ya An, Zheng-Hua Cai, Ce Feng, Pei-Yi Gao, Min Gong, Ke Huang, Yue Li, Bing Li, Xiao-Bo Li, Xin-Qiao Liu, Xiao-Jing Liu, Ya-Qing Ma, Xiang Peng, Wen-Xi Qiao, Rui Song, Li-Ming Sun, Xi-Lei Tan, Wen-Jun Wang, Jin Wang, Jin-Zhou Wang, Ping Wang, Yue Wen, Xiang-Yang Xie, Sheng-Lun Xue, Wang-Chen Yang, Sheng Yi, Qi-Bin Yu, Zheng-Hang Zhang, Da-Li Zhang, Fan Zhang, Hong-Mei Zhang, Jin-Peng Zhang, Peng Zhang, Shuang-Nan Zhang, Wen-Long Zhang, Zhen Zhao, Xiao-Yun Zhao, Yi Zheng, Chao Zheng, Shi-Jie |
| contents | GECAM is a constellation of all-sky monitors in hard X-ray and gamma-ray band primarily aimed at high energy transients such as gamma-ray bursts, soft gamma-ray repeaters, solar flares and terrestrial gamma-ray flashes. As GECAM has the highest temporal resolution (0.1~$μ$s) among instruments of its kind, it can identify the so-called simultaneous events (STE) that deposit signals in multiple detectors nearly at the same time (with a 0.3~$μ$s window). However, the properties and origin of STE have not yet been explored. In this work, we implemented, for the first time, a comprehensive analysis of the STE detected by GECAM, including their morphology, energy deposition, and the dependence on the geomagnetic coordinates. We find that these STE probably result from direct interactions between high-energy charged cosmic rays and satellite. These results demonstrate that GECAM can detect, identify, and characterize high-energy cosmic rays, making it a Micro Cosmic-Ray Observatory (MICRO) in low Earth orbit. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_09544 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Systematic Study of the Simultaneous Events Detected by GECAM Ren, Yang-Zhao Zhu, Feng-Rong Xiong, Shao-Lin Zhang, Yan-Qiu Wang, Chen-Wei Liu, Jia-Cong Guo, Hao-Xuan Xiao, Shuo Guo, Dong-Ya An, Zheng-Hua Cai, Ce Feng, Pei-Yi Gao, Min Gong, Ke Huang, Yue Li, Bing Li, Xiao-Bo Li, Xin-Qiao Liu, Xiao-Jing Liu, Ya-Qing Ma, Xiang Peng, Wen-Xi Qiao, Rui Song, Li-Ming Sun, Xi-Lei Tan, Wen-Jun Wang, Jin Wang, Jin-Zhou Wang, Ping Wang, Yue Wen, Xiang-Yang Xie, Sheng-Lun Xue, Wang-Chen Yang, Sheng Yi, Qi-Bin Yu, Zheng-Hang Zhang, Da-Li Zhang, Fan Zhang, Hong-Mei Zhang, Jin-Peng Zhang, Peng Zhang, Shuang-Nan Zhang, Wen-Long Zhang, Zhen Zhao, Xiao-Yun Zhao, Yi Zheng, Chao Zheng, Shi-Jie High Energy Astrophysical Phenomena GECAM is a constellation of all-sky monitors in hard X-ray and gamma-ray band primarily aimed at high energy transients such as gamma-ray bursts, soft gamma-ray repeaters, solar flares and terrestrial gamma-ray flashes. As GECAM has the highest temporal resolution (0.1~$μ$s) among instruments of its kind, it can identify the so-called simultaneous events (STE) that deposit signals in multiple detectors nearly at the same time (with a 0.3~$μ$s window). However, the properties and origin of STE have not yet been explored. In this work, we implemented, for the first time, a comprehensive analysis of the STE detected by GECAM, including their morphology, energy deposition, and the dependence on the geomagnetic coordinates. We find that these STE probably result from direct interactions between high-energy charged cosmic rays and satellite. These results demonstrate that GECAM can detect, identify, and characterize high-energy cosmic rays, making it a Micro Cosmic-Ray Observatory (MICRO) in low Earth orbit. |
| title | Systematic Study of the Simultaneous Events Detected by GECAM |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2602.09544 |