OBSERVATIONS OF THE GROWTH OF AN ACTIVE REGION FILAMENT
OBSERVATIONS OF THE GROWTH OF AN ACTIVE REGION FILAMENT
复制标题
活性区丝生长的观察
DOI：
10.3847/0004-637x/830/1/16
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发表时间：
2016-10
期刊：
影响因子：
--
通讯作者：
Yang Jiayan
中科院分区：
文献类型：
--
作者：
Yang Bo;Jiang Yunchun;Yang Jiayan
我们观测了活动区暗条的生长，这是由暗条与其邻近的超半影暗条（SF）和暗线状结构（T）之间的磁相互作用引起的。在整个生长过程中发现了多步重连。在磁丝的正足点区域发生的磁通会聚和抵消是第一步重联，这导致磁丝分叉成两组相互缠绕的线。一组锚定在原位，而另一组则移向并与SF和T的一部分相互作用。这表明了第二步重连，这导致了SF的消失和连接细丝远端和T的长丝状结构的形成。长的线状结构进一步与T相互作用，然后分成两部分，代表第三步重连。最后，又出现了一个类似的长线状结构，与固定的细丝交织在一起。Hα观测表明，这种扭曲结构是一种较长的左旋暗条。基于观测到的光球矢量磁图，我们进行了一个非线性无力场外推来重建光球上方的磁场，发现与暗条相关的日冕磁力线由两条相互缠绕的扭曲磁通绳组成。这些结果表明，磁丝与其相邻的SF和T之间的磁相互作用可能导致磁丝的生长，并且磁丝可能被支撑在磁绳中。
We present observations of the growth of an active region filament caused by magnetic interactions among the filament and its adjacent superpenumbral filament (SF) and dark thread-like structures (T). Multistep reconnections are identified during the whole growing process. Magnetic flux convergence and cancellation occurring at the positive footpoint region of the filament is the first step reconnection, which resulted in the filament bifurcating into two sets of intertwined threads. One set anchored in situ, while the other set moved toward and interacted with the SF and part of T. This indicates the second step reconnection, which gave rise to the disappearance of the SF and the formation of a long thread-like structure that connects the far ends of the filament and T. The long thread-like structure further interacted with the T and then separated into two parts, representing the third step reconnection. Finally, another similar long thread-like structure, which intertwined with the fixed filament threads, appeared. Hα observations show that this twisted structure is a longer sinistral filament. Based on the observed photospheric vector magnetograms, we performed a non-linear force-free field extrapolation to reconstruct the magnetic fields above the photosphere and found that the coronal magnetic field lines associated with the filament consists of two twisted flux ropes winding around each other. These results suggest that magnetic interactions among filaments and their adjacent SFs and T could lead to the growth of the filaments, and the filament is probably supported in a flux rope.
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DOI：
10.1086/431721
发表时间：
2005-08
期刊：
The Astrophysical Journal
影响因子：
--
作者：
C. DeVore;S. Antiochos;G. Aulanier
通讯作者：
C. DeVore;S. Antiochos;G. Aulanier
DOI：
10.1088/0004-637x/714/1/343
发表时间：
2010-05
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Yang Guo;Yang Guo;B. Schmieder;P. Démoulin;T. Wiegelmann;G. Aulanier;Tibor Török;V. Bommier
通讯作者：
Yang Guo;Yang Guo;B. Schmieder;P. Démoulin;T. Wiegelmann;G. Aulanier;Tibor Török;V. Bommier
双层细丝的缓慢上升和部分喷发。
影响因子：
4.9
作者：
Titov, Viacheslav S.;Lionello, Roberto;Linker, Jon A.;Wang, Haimin
通讯作者：
Wang, Haimin
影响因子：
2.8
作者：
D. Rust;A. Kumar
通讯作者：
D. Rust;A. Kumar
由细丝-细丝相互作用引发的复杂耀斑动力学
影响因子：
4.9
作者：
Zhu Chunming;Liu Rui;Alex;er David;Sun Xudong;McAteer R. T. James
通讯作者：
McAteer R. T. James