Simultaneous Pulsating Aurora and Microburst Observations With Ground‐Based Fast Auroral Imagers and CubeSat FIREBIRD‐II
Simultaneous Pulsating Aurora and Microburst Observations With Ground‐Based Fast Auroral Imagers and CubeSat FIREBIRD‐II
复制标题
使用地基快速极光成像仪和 CubeSat FIREBIRD-II 同时进行脉动极光和微爆观测
DOI：
10.1029/2021gl094494
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发表时间：
2021
影响因子：
5.2
通讯作者：
Br?ndstr?m Urban
中科院分区：
文献类型：
--
作者：
Kawamura Miki;Sakanoi Takeshi;Fukizawa Mizuki;Miyoshi Yoshizumi;Hosokawa Keisuke;Tsuchiya Fuminori;Katoh Yuto;Ogawa Yasunobu;Asamura Kazushi;Saito Shinji;Spence Harlan;Johnson Arlo;Oyama Shin'ichiro;Br?ndstr?m Urban
我们首次利用 FIREBIRD-II CubeSat 对地面快速极光成像仪进行同步观测，报告了脉动极光与相对论电子微爆之间的关系。我们对 2018 年 10 月 8 日的事件进行了详细分析，发现内部调制的脉动极光的出现对应于由 FIREBIRD 的 CubeSat 之一的 Flight Unit 4 检测到的能量范围从 ∼220 keV 到 >1 MeV 的电子通量增强，延迟时间为 ∼585 ms。结合这个时间延迟结果和飞行时间模型，我们认为脉动极光和微爆发是由于不同纬度的合唱波沿着同一场线同时发生的，正如 Miyoshi 等人预测的那样。 （2020，https://doi.org/10.1029/2020gl090360）。
We report on the relationship between a pulsating aurora and a relativistic electron microburst using simultaneous observations of ground‐based fast auroral imagers with the FIREBIRD‐Ⅱ CubeSat for the first time. We conducted a detailed analysis of an event on October 8, 2018 and found that the occurrence of the pulsating aurora with internal modulations corresponds to the flux enhancement of electrons with energy ranging from ∼220 keV to >1 MeV detected with Flight Unit 4, one of FIREBIRD's CubeSat, with a time delay of ∼585 ms. Combining of this time delay result and time of flight model, we suggest that the pulsating aurora and the microburst occur simultaneously due to the chorus waves at different latitudes along the same field‐line as predicted by Miyoshi et al. (2020, https://doi.org/10.1029/2020gl090360).