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首页> 外文期刊>Geophysical Research Letters >Dawn-dusk asymmetry'' in solar coronal arcade formations - art. no. 2014
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Dawn-dusk asymmetry'' in solar coronal arcade formations - art. no. 2014

机译:日冕拱形结构中的黎明黄昏不对称性-艺术。没有。 2014年

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摘要

Solar flares/arcades and magnetospheric substorms are believed to have a common physical process: energy release via magnetic reconnection. In substorms, it is known that the reconnection point tends to occur more in the dusk side of the magnetotail than in the dawn side. This asymmetry is called the dawn-dusk asymmetry. However, no one has examined so far the existence of such asymmetry in the solar corona. We investigated the directions of arcade formation and -v(in) x B electric field for 32 events, and found that more arcades successively formed in the direction of the electric field than in the opposite direction. This may be a solar analogue of dawn-dusk asymmetry. We also found that velocity of successive formation of arcades increases with the aspect ratio of the arcade. [References: 18]
机译:太阳耀斑/拱廊和磁层亚暴被认为具有共同的物理过程:通过磁重联释放能量。在亚暴风雨中,众所周知,重连点倾向于在磁尾的黄昏侧而不是在黎明侧。这种不对称性称为黎明黄昏不对称性。但是,到目前为止,还没有人研究过这种不对称现象。我们研究了32个事件的拱廊形成方向和-v(in)x B电场,发现在电场方向上相继形成的拱廊比在相反方向上更多。这可能是黎明黄昏不对称的太阳模拟。我们还发现,拱廊的连续形成速度随拱廊的纵横比而增加。 [参考:18]

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