论文标题
与向下的陆地伽马射线闪光相关的闪电闪光灯的首次高速摄像机观察
First High-speed Video Camera Observations of a Lightning Flash Associated with a Downward Terrestrial Gamma-ray Flash
论文作者
论文摘要
在本文中,我们介绍了云到地面闪电闪光的第一个高速视频观察及其相关的向下定向的陆地伽马射线闪光灯(TGF)。通过与望远镜阵列表面检测器,闪电映射阵列,干涉仪,电场快速天线和国家闪电检测网络一起运行的高速摄像机观察到了事件的光发射。与观察到的TGF相关的云对地面闪光是由快速向下的领导者形成的,其次是-154 ka的非常强烈的返回峰值电流。 TGF发生在下降的领导者低于云基座的同时,即使它在地面传播的一半也是如此。伽马射线和闪电仪器的套件,时机解决方案和来源接近度为我们提供了详细的信息,因此对TGF现象进行了独特的了解。
In this paper, we present the first high-speed video observation of a cloud-to-ground lightning flash and its associated downward-directed Terrestrial Gamma-ray Flash (TGF). The optical emission of the event was observed by a high-speed video camera running at 40,000 frames per second in conjunction with the Telescope Array Surface Detector, Lightning Mapping Array, interferometer, electric-field fast antenna, and the National Lightning Detection Network. The cloud-to-ground flash associated with the observed TGF was formed by a fast downward leader followed by a very intense return stroke peak current of -154 kA. The TGF occurred while the downward leader was below cloud base, and even when it was halfway in its propagation to ground. The suite of gamma-ray and lightning instruments, timing resolution, and source proximity offer us detailed information and therefore a unique look at the TGF phenomena.