The First GECAM Observation Results on Terrestrial Gamma-Ray Flashes and Terrestrial Electron Beams

作者：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.

来源：Geophysical Research Letteres, 2023, 50(14): e2022GL102325.

DOI：10.1029/2022GL102325

• terrestrial gamma-ray flashes
• terrestrial electron beams
• GECAM

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 & SIM;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 & SIM;80% is obtained between GECAM and GLD360 in east Asia region.

• 单位
  同济大学; 中国科学院; 武汉大学; 西南交通大学; 湘潭大学; 中国科学院研究生院