The First GECAM Observation Results on Terrestrial Gamma‐Ray Flashes and Terrestrial Electron Beams
Y. Zhao, J. C. Liu, S. L. Xiong, W. C. Xue, Q. B. Yi, Gaopeng Lu, Wei Xu, Fanchao Lyu, Jianchao Sun, Wen-Xi Peng, Chao Zheng, Yi‐Qi Zhang, Ce Cai, Shuo Xiao, Sheng-Lun Xie, Cheng-Er Wang, W. J. Tan, Zhenghua An, G. Chen, Yuchen Du, Y. Huang, M. Gao, Ke Gong, D. Y. Guo, Jian-Guo He, Bing Li, Gang Li, Xiang Li, Xiao‐Bo Li, J. Y. Liao, Jing Liang, X. H. Liang, Yaqing Liu, X. Ma, Rui Qiao, L. M. Song, X. Y. Song, Xilei Sun, J. Wang, J. Z. Wang, Peng Wang, X. Y. Wen, Hong Wu, Yaobin Xu, S. Yang, B. X. Zhang, Dali Zhang, Feng Zhang, Peng Zhang, H. M. Zhang, Zhe Zhang, X. Y. Zhao, S. J. Zheng, K. K. Zhang, Xingbo Han, Hailing Wu, T. Hu, Hongya Geng, Hongbo Zhang, F. J. Lu, Shuang‐Nan Zhang, Heng Yu
Abstract
Abstract Gravitational‐wave high‐energy Electromagnetic Counterpart All‐sky Monitor (GECAM) is a space‐borne instrument dedicated to monitoring high‐energy transients, including Terrestrial Gamma‐ray Flashes (TGFs) and Terrestrial Electron Beams (TEBs). We implemented a TGF/TEB search algorithm for GECAM, with which 147 bright TGFs, 2 typical TEBs and 2 special TEB‐like events are identified during an effective observation time of ∼9 months. We show that, with gamma‐ray and charged particle detectors, GECAM can effectively identify and distinguish TGFs and TEBs, and measure their temporal and spectral properties in detail. A very high TGF‐lightning association rate of ∼80% is obtained between GECAM and GLD360 in east Asia region.