Aurora in the Polar Cap: A Review
Aurora in the Polar Cap: A Review
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DOI：
10.1007/s11214-020-0637-3
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发表时间：
2020-02
影响因子：
10.3
通讯作者：
K. Hosokawa;A. Kullen;S. Milan;J. Reidy;Y. Zou;H. Frey;R. Maggiolo;R. Fear
中科院分区：
文献类型：
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作者：
K. Hosokawa;A. Kullen;S. Milan;J. Reidy;Y. Zou;H. Frey;R. Maggiolo;R. Fear
本文回顾了我们目前对极光特征的理解，这些极光特征出现在极冠内的主要极光椭圆的极向，特别是那些被称为太阳对准弧，跨极弧或θ极光的极光。它们往往主要出现在地磁活动平静或行星际磁场向北的时期。我们还介绍了极雨极光，这已被认为是一种现象的开放场线。我们描述了这样的极光的形态，它们的发展和动态响应太阳风磁层耦合过程，以及已开发的模型来解释它们。
This paper reviews our current understanding of auroral features that appear poleward of the main auroral oval within the polar cap, especially those that are known as Sun-aligned arcs, transpolar arcs, or theta auroras. They tend to appear predominantly during periods of quiet geomagnetic activity or northwards directed interplanetary magnetic field (IMF). We also introduce polar rain aurora which has been considered as a phenomenon on open field lines. We describe the morphology of such auroras, their development and dynamics in response to solar wind-magnetosphere coupling processes, and the models that have been developed to explain them.