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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Velocity structure of jets in a coronal hole
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Velocity structure of jets in a coronal hole

机译：冠状孔中射流的速度结构

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摘要

The velocity structures of jets in a coronal hole have been derived for the first time. Hinode observations revealed the existence of many bright points in coronal holes. They are loop-shaped and sometimes associated with coronal jets. Spectra obtained with the Extreme-ultraviolet Imaging Spectrometer aboard Hinode were analyzed to infer the Doppler velocity of bright loops and jets in a coronal hole of the north polar region. Elongated jets above bright loops are found to be blue-shifted by 30 km s(-1) at maximum, while foot points of bright loops are red-shifted. Blue-shifts detected in coronal jets are interpreted as being upflows produced by magnetic reconnection between emerging flux and the ambient field in the coronal hole.
机译：冠状孔中射流的速度结构是首次得出。日出观察发现冠状孔内存在许多亮点。它们是环状的，有时与冠状喷射有关。分析用Hinode上的极紫外成像光谱仪获得的光谱，以推断出北极圈冠状孔中亮环和射流的多普勒速度。发现明亮环上方的细长喷流最大可蓝移30 km s（-1），而明亮环的脚点则可红移。在日冕射流中检测到的蓝移被解释为由新兴通量和日冕孔周围环境之间的磁重连接产生的上流。

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