Three-dimensional simulations of the orientation and structure of reconnection X-lines
Three-dimensional simulations of the orientation and structure of reconnection X-lines
复制标题
重联X线的方向和结构的三维模拟
DOI：
10.1063/1.3494218
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
P. Cassak
中科院分区：
文献类型：
--
作者：
R. Schreier;M. Swisdak;J. Drake;P. Cassak
这项工作采用霍尔磁流体动力学（MHD）模拟研究的X-线在重联过程中形成的磁场具有不同的强度和方向嵌入在不同密度的等离子体。尽管随机初始扰动触发了具有许多方向的X线的增长，但在后期，一些稳健的X线共享与最大化流出速度的方向合理一致的方向，如Swisdak和Drake所预测的[Geophys.保留信函：34，L11106，（2007）]，支配系统。存在的重联在这里审查的几何相矛盾的建议Sonnerup [J.地球物理学。结果：79，1546（1974）]，重联发生在垂直于平衡电流的平面内。在后期，X线的增长停滞，使它们比模拟域短。
This work employs Hall magnetohydrodynamic (MHD) simulations to study the X-lines formed during the reconnection of magnetic fields with differing strengths and orientations embedded in plasmas of differing densities. Although random initial perturbations trigger the growth of X-lines with many orientations, at late time a few robust X-lines sharing an orientation reasonably consistent with the direction that maximizes the outflow speed, as predicted by Swisdak and Drake [Geophys. Res. Lett., 34, L11106, (2007)], dominate the system. The existence of reconnection in the geometry examined here contradicts the suggestion of Sonnerup [J. Geophys. Res., 79, 1546 (1974)] that reconnection occurs in a plane normal to the equilibrium current. At late time the growth of the X-lines stagnates, leaving them shorter than the simulation domain.