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Zhao, Y.; Liu, J. C.; Xiong, S. L.; Xue, W. C.; Yi, Q. B.; Lu, G. P.; Xu, W.; Lyu, F. C.; Sun, J. C.; Peng, W. X.; Zheng, C.; Zhang, Y. Q.; Cai, C.; Xiao, S.; Xie, S. L.; Wang, C. W.; Tan, W. J.; An, Z. H.; Chen, G.; Du, Y. Q.; Huang, Y.; Gao, M.; Gong, K.; Guo, D. Y.; He, J. J.; Li, B.; Li, G.; Li, X. Q.; Li, X. B.; Liao, J. Y.; Liang, J.; Liang, X. H.; Liu, Y. Q.; Ma, X.; Qiao, R.; Song, L. M.; Song, X. Y.; Sun, X. L.; Wang, J.; Wang, J. Z.; Wang, P.; Wen, X. Y.; Wu, H.; Xu, Y. B.; Yang, S.; Zhang, B. X.; Zhang, D. L.; Zhang, F.; Zhang, P.; Zhang, H. M.; Zhang, Z.; Zhao, X. Y.; Zheng, S. J.; Zhang, K. K.; Han, X. B.; Wu, H. Y.; Hu, T.; Geng, H.; Zhang, H. B.; Lu, F. J.; Zhang, S. N.; Yu, H.
Geophysical research letters, 28 July 2023, Letnik: 50, Številka: 14Journal Article
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. Plain Language Summary Terrestrial gamma‐ray flashes (TGFs) and Terrestrial Electron Beams (TEBs) represent the most energetic radioactive phenomena in the atmosphere of the Earth. They reflect a natural particle accelerator that can boost electrons up to at least several tens of mega electron volts and produce gamma‐ray radiation. With novel detection technologies, Gravitational‐wave high‐energy Electromagnetic Counterpart All‐sky Monitor (GECAM) is a new powerful instrument to observe TGFs and TEBs, as well as study their properties. For example, it is difficult for most space‐borne high‐energy instruments to distinguish between TGFs and TEBs. However, we show here that, with the joint observation of gamma‐ray and charged particle detectors, GECAM can effectively identify TGFs and TEBs. GECAM can also reveal their fine features in the light curves and spectra. Key Points During 9‐month observation, Gravitational‐wave high‐energy Electromagnetic Counterpart All‐sky Monitor (GECAM) has detected 147 bright Terrestrial Gamma‐ray Flashes (TGFs), 2 typical Terrestrial Electron Beams (TEBs), and 2 special TEB‐like events With novel detector design, GECAM can effectively classify TGFs and TEBs, and reveal their fine temporal features We obtained a very high TGF‐lightning association rate (∼80%) between GECAM and GLD360 in east Asia region
