Evidence of small-scale magnetic concentrations dragged by vortex motion of solar photospheric plasma
Evidence of small-scale magnetic concentrations dragged by vortex motion of solar photospheric plasma
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DOI：
10.1051/0004-6361/200913584
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发表时间：
2010-04-01
影响因子：
6.5
通讯作者：
Domingo, V.
中科院分区：
文献类型：
--
作者：
Balmaceda, L.;Dominguez, S. Vargas;Domingo, V.
在太阳光球的高分辨率观测中，通过跟踪亮点来测量漩涡型运动。这些小规模的运动被认为是磁足点演化及其与等离子体相互作用的决定性因素，因此可能在通过扭曲磁通管加热太阳高层大气方面发挥作用。我们报告了从高分辨率地面和空间数据观测到的磁浓度被拖向太阳光球对流涡旋运动的中心。我们通过分析太阳不同大气层的一系列图像来描述这一事件。通过计算水平固有运动，我们发现了一个漩涡，其中心似乎是磁图中检测到的磁浓度的排泄点，并且与g波段和CN图像中看到的亮点位置密切相关。
Vortex-type motions have been measured by tracking bright points in high-resolution observations of the solar photosphere. These small-scale motions are thought to be determinant in the evolution of magnetic footpoints and their interaction with plasma and therefore likely to play a role in heating the upper solar atmosphere by twisting magnetic flux tubes. We report the observation of magnetic concentrations being dragged towards the center of a convective vortex motion in the solar photosphere from high-esolution ground-based and space-borne data. We describe this event by analyzing a series of images at different solar atmospheric layers. By computing horizontal proper motions, we detect a vortex whose center appears to be the draining point for the magnetic concentrations detected in magnetograms and well-correlated with the locations of bright points seen in G-band and CN images.