与下行地面伽马射线闪相关联的闪电首次高速摄像机观测
大气与海洋物理
2023-08-11 v2 天体物理仪器与方法
高能物理 - 实验
摘要
在本文中，我们展示了云对地闪电及其相关联的下行定向地面伽马射线闪（TGF）的首次高速视频观测。该事件的光学辐射由以每秒 40,000 帧运行的高速摄像机结合望远镜阵列地面探测器、闪电测绘阵列、干涉仪、电场快天线以及国家闪电探测网观测。与所观测 TGF 相关联的云对地闪电由快速下行先导随后极强的回击峰值电流 -154 kA 形成。TGF 发生在下行先导位于云底以下时，甚至在其向地面传播至一半时。伽马射线与闪电仪器组合、时间分辨率以及源邻近性为我们提供了详细信息，从而得以独特地观测 TGF 现象。
引用
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journal= {arXiv preprint arXiv:2205.05115},
year = {2023}
}