Magnetic reconnection in flux-tubes undergoing spinning footpoint motions
Magnetic reconnection in flux-tubes undergoing spinning footpoint motions
复制标题
经历旋转足点运动的磁通管中的磁重联
DOI：
10.1051/0004-6361:20077455
复制
发表时间：
2007
影响因子：
6.5
通讯作者：
Wilmot-Smith A
中科院分区：
文献类型：
--
作者：
Wilmot-Smith A
作用于日冕磁场的光球运动有可能产生大量的磁能。能量可能通过磁重联释放，因此，如果要充分解决其对日冕加热的影响，详细了解3D过程至关重要。方法对错位磁通管进行简单旋转边界运动的三维MHD实验。结果相邻磁通系统之间产生的剪切产生一个扭曲的中心分离电流片，垂直延伸到整个区域。电流密度被放大到足够的程度，重新连接开始，并且沿着分离电流片到处发生，而在实验早期阶段存在的分离矩阵电流片在系统的动力学演化中被发现是不重要的。在二维截面上，重联过程与通量堆积重联有许多相似之处。
AimsPhotospheric motions acting on the coronal magnetic field have the potential to build up huge amounts of magnetic energy. The energy may be released through magnetic reconnection, and so a detailed understanding of the 3D process is crucial if its implications for coronal heating are to be fully addressed.MethodsA 3D MHD experiment is described in which misaligned magnetic flux tubes are subjected to simple spinning boundary motions.ResultsThe resulting shear between adjacent flux systems generates a twisted central separator current sheet that extends vertically throughout the domain. Current density is amplified to a sufficient extent that reconnection begins, and occurs everywhere along the separator current sheet, while the separatrix current sheets that exist in the early stages of the experiment are found to be unimportant in the systems dynamical evolution. In 2D cross-sections, the reconnection process exhibits many similarities to the regime of flux pile-up reconnection.
影响因子：
4.6
作者：
D. Biskamp
通讯作者：
D. Biskamp
DOI：
10.1086/424659
发表时间：
2004
期刊：
The Astrophysical Journal Letters
影响因子：
--
作者：
R. Close;C. Parnell;D. Longcope;E. Priest
通讯作者：
E. Priest