下行地面伽马射线闪现起源的观测
大气与海洋物理
2021-02-03 v2 高能天体物理现象
高能物理 - 实验
摘要
在本文中，我们报道了由大面积望远镜阵列宇宙线天文台探测到的下行定向地面伽马射线闪现（TGFs）的首次近距离高分辨率观测，这些观测是与对母体放电的宽带 VHF 干涉仪和快电场变化测量联合获得的。结果表明，TGFs 发生在负地闪和低高度云内闪最初几毫秒内的强初始击穿脉冲（IBPs）期间，并且 IBPs 由一种新识别的基于流光的放电过程——快速负击穿产生。观测表明，负责产生 TGFs 的相对论逃逸电子雪崩（RREAs）由快速流光系统内嵌入的类火花瞬态导电事件（TCEs）引发，也可能由单个快速流光本身引发。TCEs 被推断为经典 IBP 球面闪电特征性脉冲亚脉冲的成因。雪崩的进一步发展将由快速负击穿推进前沿前方的增强电场促进。除了揭示 IBPs 及其神秘亚脉冲的性质外，观测还为未解决的流光到先导转换如何在初始负击穿期间发生的问题提供了解释，即作为连续 IBPs 最后阶段中强电流流经 IBP 自身及 IBP 前的负流光击穿并向后延伸的结果。
引用
@article{arxiv.2009.14327,
title = {Observations of the Origin of Downward Terrestrial Gamma-Ray Flashes},
author = {J. W. Belz and P. R. Krehbiel and J. Remington and M. A. Stanley and R. U. Abbasi and R. LeVon and W. Rison and D. Rodeheffer and the Telescope Array Scientific Collaboration and : and T. Abu-Zayyad and M. Allen and E. Barcikowski and D. R. Bergman and S. A. Blake and M. Byrne and R. Cady and B. G. Cheon and M. Chikawa and A. di Matteo and T. Fujii and K. Fujita and R. Fujiwara and M. Fukushima and G. Furlich and W. Hanlon and M. Hayashi and Y. Hayashi and N. Hayashida and K. Hibino and K. Honda and D. Ikeda and T. Inadomi and N. Inoue and T. Ishii and H. Ito and D. Ivanov and H. Iwakura and H. M. Jeong and S. Jeong and C. C. H. Jui and K. Kadota and F. Kakimoto and O. Kalashev and K. Kasahara and S. Kasami and H. Kawai and S. Kawakami and K. Kawata and E. Kido and H. B. Kim and J. H. Kim and J. H. Kim and V. Kuzmin and M. Kuznetsov and Y. J. Kwon and K. H. Lee and B. Lubsandorzhiev and J. P. Lundquist and K. Machida and H. Matsumiya and J. N. Matthews and T. Matuyama and R. Mayta and M. Minamino and K. Mukai and I. Myers and S. Nagataki and K. Nakai and R. Nakamura and T. Nakamura and Y. Nakamura and T. Nonaka and H. Oda and S. Ogio and M. Ohnishi and H. Ohoka and Y. Oku and T. Okuda and Y. Omura and M. Ono and A. Oshima and S. Ozawa and I. H. Park and M. Potts and M. S. Pshirkov and D. C. Rodriguez and G. Rubtsov and D. Ryu and H. Sagawa and R. Sahara and K. Saito and Y. Saito and N. Sakaki and T. Sako and N. Sakurai and K. Sano and T. Seki and K. Sekino and F. Shibata and T. Shibata and H. Shimodaira and B. K. Shin and H. S. Shin and J. D. Smith and P. Sokolsky and N. Sone and B. T. Stokes and T. A. Stroman and Y. Takagi and Y. Takahashi and M. Takeda and R. Takeishi and A. Taketa and M. Takita and Y. Tameda and K. Tanaka and M. Tanaka and Y. Tanoue and S. B. Thomas and G. B. Thomson and P. Tinyakov and I. Tkachev and H. Tokuno and T. Tomida and S. Troitsky and Y. Tsunesada and Y. Uchihori and S. Udo and T. Uehama and F. Urban and M. Wallace and T. Wong and M. Yamamoto and H. Yamaoka and K. Yamazaki and K. Yashiro and M. Yosei and H. Yoshii and Y. Zhezher and Z. Zundel},
journal= {arXiv preprint arXiv:2009.14327},
year = {2021}
}
备注
Typo fixed and reference added. Manuscript is 36 pages. Supplemental Information is 42 pages. This paper is to be published in the Journal of Geophysical Research: Atmospheres. Online data repository: Open Science Framework DOI: 10.17605/OSF.IO/Z3XDA