标题： 三维MHD模拟中的快速磁重联 显示英文标题

标题： Fast magnetic reconnection in three dimensional MHD simulations

摘要： 我们提出一个三维周期箱中快速磁重联的构造性数值示例。 重联由对场线的强局部扰动引发。 该解本质上是三维的，其总体特性不依赖于模拟的细节。 $\sim 50%$的磁能在一个持续约一个阿尔芬时间的事件中释放，但仅在场线演化成临界构型的延迟之后。 我们提出了该过程的物理图像。 重联区域是动态的且相互作用的。 在这些区域的随动框架中，重联通过类似X点的方式发生，类似于佩茨克重联。 动力学似乎由全局流动驱动，而不是局部过程。 显示英文摘要

摘要： We present a constructive numerical example of fast magnetic reconnection in a three dimensional periodic box. Reconnection is initiated by a strong, localized perturbation to the field lines. The solution is intrinsically three dimensional, and its gross properties do not depend on the details of the simulations. $\sim 50%$ of the magnetic energy is released in an event which lasts about one Alfven time, but only after a delay during which the field lines evolve into a critical configuration. We present a physical picture of the process. The reconnection regions are dynamical and mutually interacting. In the comoving frame of these regions, reconnection occurs through an X-like point, analogous to Petschek reconnection. The dynamics appear to be driven by global flows, not local processes.