First 10 Months of TGF Observations by ASIM
First 10 Months of TGF Observations by ASIM
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ASIM 前 10 个月的 TGF 观测
DOI：
10.1029/2019jd031214
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
S. Al
中科院分区：
文献类型：
--
作者：
N. Østgaard;T. Neubert;V. Reglero;K. Ullaland;Shiming Yang;G. Genov;M. Marisaldi;A. Mezentsev;P. Kochkin;N. Lehtinen;D. Sarria;B. Qureshi;A. Solberg;C. Maiorana;K. Albrechtsen;C. Budtz;I. Kuvvetli;F. Christiansen;O. Chanrion;M. Heumesser;J. Navarro;P. Connell;C. Eyles;H. Christian;S. Al
大气-空间相互作用监测器（ASIM）于2018年4月2日发射到国际空间站。ASIM有效载荷由两个主要仪器组成，一个是模块化X射线和伽马射线传感器（MXGS），用于地面伽马射线闪光（TGFs）的成像和光谱分析，另一个是模块化多光谱成像阵列，用于瞬态发光事件和闪电的探测、成像和光谱分析。ASIM是为同时观测瞬态发光事件、TGF和光学闪电而设计的第一个空间使命。在运行的前10个月（2018年6月2日至2019年4月1日），MXGS观察到217个TGF。在本文中，我们报告了ASIM在此期间获得的几项前所未有的测量和新的科学成果：（1）费米伽马射线爆发监测器和ASIM MXGS同时观测TGF，揭示了ASIM MXGS非常好的探测能力，并显示了TGF中的亚结构，（2）观察到在同一闪电期间甚至同时产生的TGF和Elves，（3）TGFs的第一次成像给出了一个独特的源位置，（4）TGFs是在先导向上传播期间产生的强统计支持，就在一个大电流脉冲加热通道并发射一个强光脉冲之前，（5）从太空观察到的TGFs的t50持续时间比以前报道的要短。
The Atmosphere‐Space Interactions Monitor (ASIM) was launched to the International Space Station on 2 April 2018. The ASIM payload consists of two main instruments, the Modular X‐ray and Gamma‐ray Sensor (MXGS) for imaging and spectral analysis of Terrestrial Gamma‐ray Flashes (TGFs) and the Modular Multi‐spectral Imaging Array for detection, imaging, and spectral analysis of Transient Luminous Events and lightning. ASIM is the first space mission designed for simultaneous observations of Transient Luminous Events, TGFs, and optical lightning. During the first 10 months of operation (2 June 2018 to 1 April 2019) the MXGS has observed 217 TGFs. In this paper we report several unprecedented measurements and new scientific results obtained by ASIM during this period: (1) simultaneous TGF observations by Fermi Gamma‐ray Burst Monitor and ASIM MXGS revealing the very good detection capability of ASIM MXGS and showing substructures in the TGF, (2) TGFs and Elves produced during the same lightning flash and even simultaneously have been observed, (3) first imaging of TGFs giving a unique source location, (4) strong statistical support for TGFs being produced during the upward propagation of a leader just before a large current pulse heats up the channel and emits a strong optical pulse, and (5) the t50 duration of TGFs observed from space is shorter than previously reported.
影响因子：
4.4
作者：
Abbasi, R. U.;Abu-Zayyad, T.;Zundel, Z.
通讯作者：
Zundel, Z.