Terrestrial Gamma‐Ray Flashes Can Be Detected With Radio Measurements of Energetic In‐Cloud Pulses During Thunderstorms
Terrestrial Gamma‐Ray Flashes Can Be Detected With Radio Measurements of Energetic In‐Cloud Pulses During Thunderstorms
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DOI：
10.1029/2021gl093627
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发表时间：
2021-06
影响因子：
5.2
通讯作者：
F. Lyu;S. Cummer;M. Briggs;David M. Smith;B. Mailyan;S. Lesage
中科院分区：
文献类型：
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作者：
F. Lyu;S. Cummer;M. Briggs;David M. Smith;B. Mailyan;S. Lesage
关于地面伽马射线闪光（TGF）如何产生的许多细节，包括它们与向上传播的云内闪电先导通道的关系，仍然知之甚少。与 TGF 生产相关的低频无线电发射的测量继续为该过程的电动力学提供独特的观点和关键见解。在这里，我们报告了有关云内高能脉冲 (EIP) 和 TGF 之间联系的更多详细信息。通过费米和鲁文拉马蒂高能太阳光谱成像仪航天器上的地面无线电传感器和天基伽马射线探测器的协调测量，我们发现在搜索的时空窗口内发生的所有十个+EIP都与同时的TGF相关，其中包括以前仅通过伽马射线测量未识别出的两个新的TGF。这项研究的结果不仅巩固了 +EIP 和 TGF 之间的紧密联系，而且还证明了仅使用地面无线电传感器检测 TGF 亚群的实用性。
Many of the details of how terrestrial gamma‐ray flashes (TGFs) are produced, including their association with upward‐propagating in‐cloud lightning leader channels, remain poorly understood. Measurements of the low‐frequency radio emissions associated with TGF production continue to provide unique views and key insights into the electrodynamics of this process. Here we report further details on the connection between energetic in‐cloud pulses (EIPs) and TGFs. With coordinated measurements from both ground‐based radio sensors and space‐based gamma‐ray detectors on the Fermi and Reuven Ramaty High Energy Solar Spectroscopic Imager spacecraft, we find that all ten +EIPs that occurred within the searched space‐and‐time window are associated with simultaneous TGFs, including two new TGFs that were not previously identified by the gamma‐ray measurements alone. The results in this study not only solidify the tight connection between +EIPs and TGFs, but also demonstrate the practicability of detecting a subpopulation of TGFs with ground‐based radio sensors alone.