太阳大气中磁场的扭转储能

本文从完整的磁流体动力学方程组出发, 研究太阳大气中磁力线管根部的扭转储存能量。通过数值方法, 研究了包含太阳表面过渡区在内的非线性无力场的动力学演化。假设初始磁场位形为势场, 根部等离子体运动使活动区磁场扭转。磁能蓬新分布, 在局部区域中储存大量的磁能。计算结果给出非线性无力场的定量关系, 可以解释太阳耀斑的储能过程。 

ON THE ENERGY STORAGE IN THE SOLAR ATMOSPHERE BY TWISTING MAGNETIC FIELD

In this paper a complete set of MHDequations was used to study the energy storage in the solar atmosphere by twisting the tube of magnetic lines of force at the base.By means of numerical method, dynamic evolution of nonlinear, force-free magnetic fields of the solar surface, including the transition region, was investigated.It was assumed that the initial magnetic fields configuration is a potential field;the plasma motions at the feet of lines make magnetic fields in the active regions twisting.Magnetic energy is rearranged in this way much of magnetic energy can be stored in the local regions.Computed results give a quantitative expression for nonlinear force-free fields..These results could explain the energy-storing process of solar flares.