DISCOVERY OF A NEW CLASS OF CORONAL STRUCTURES IN WHITE LIGHT ECLIPSE IMAGES
DISCOVERY OF A NEW CLASS OF CORONAL STRUCTURES IN WHITE LIGHT ECLIPSE IMAGES
复制标题
白光日食图像中发现一类新的日冕结构
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
H. Morgan
中科院分区：
文献类型：
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作者：
M. Druckmüller;S. Habbal;H. Morgan
日全食期间拍摄的日冕白光图像捕捉到了日冕等离子体和磁场之间复杂的动态关系。这种关系可以记录在几秒钟到几分钟的时间尺度上，在太阳表面上方几个太阳半径内。射线、大尺度环路和流光是这些图像中最明亮的结构，它们塑造了日冕磁场和太阳风流的电流模型。在这项工作中，我们展示了如何将新的图像处理技术应用到独特的高分辨率白光日食图像中，揭示出一种新的结构的存在，让人想起烟圈、微弱的嵌套膨胀环、膨胀的气泡和扭曲的螺旋结构。这些特征被解释为在日冕-日冕界面上发展并随太阳风向外传播的不稳定性动态演变的快照。
White light images of the solar corona, taken during total solar eclipses, capture the complex dynamic relationship between the coronal plasma and the magnetic field. This relationship can be recorded on timescales of seconds to minutes, within a few solar radii above the solar surface. Rays, large-scale loops, and streamers, which are the brightest structures in these images, have shaped current models of the coronal magnetic field and solar wind flow. We show in this work how the application of novel image processing techniques to unique high-resolution white light eclipse images reveals the presence of a new class of structures, reminiscent of smoke rings, faint nested expanding loops, expanding bubbles, and twisted helical structures. These features are interpreted as snapshots of the dynamical evolution of instabilities developing at prominence–corona interfaces and propagating outward with the solar wind.