标题： 线束缚对磁流体不稳定性及电流片形成的影响 显示英文标题

标题： Effects of Line-tying on Magnetohydrodynamic Instabilities and Current Sheet Formation

摘要： 对线约束系统中磁流体动力学稳定性及电流片形成的一些最新进展进行了综述。 理想内部 kink 模式和电阻撕裂模式的线性稳定性关键结果被总结。 对于非线性问题，提出了对 Low \emph{等} 所展示的电流片形成的反例。 [B. C. Low 和 \AA . M. Janse, Astrophys. J. \textbf{696}, 821 (2009)] 被提出，并推导了边界驱动、线约束磁场准静态演化的控制方程。 讨论了一些开放问题及可能的解决策略。 显示英文摘要

摘要： An overview of some recent progress on magnetohydrodynamic stability and current sheet formation in a line-tied system is given. Key results on the linear stability of the ideal internal kink mode and resistive tearing mode are summarized. For nonlinear problems, a counterexample to the recent demonstration of current sheet formation by Low \emph{et al}. [B. C. Low and \AA. M. Janse, Astrophys. J. \textbf{696}, 821 (2009)] is presented, and the governing equations for quasi-static evolution of a boundary driven, line-tied magnetic field are derived. Some open questions and possible strategies to resolve them are discussed.