光球物质的水平运动对暗条激活和耀斑爆发的影响

THE INFLUENCE OF HORIZONTAL MOTION OF PHOTOSPHERIC MATTER ON FILAMENT ACTlVATION AND SOLAR FLARE

本文作者用数值方法讨论光球物质水平运动的两种基本模式──剪切运动和会聚运动对活动区背景磁场及暗条电流的影响，并由此分析它们与暗条激活以及耀斑爆发的物理关系。所得结果表明：（１）光球物质的水平运动在激活暗条和驱动耀斑爆发中具有重要的作用；（２）作为耀斑现象先兆之一的暗条激活过程，主要是由暗条电流的增强和背景磁场的演化所决定。这个过程的复杂性导致了耀斑现象物理机制和形态的多样性。

Using numerical calculation the influence on the filament current and the background magnetic field in the active regions by two fundamental models of horizontal motion-shearing motion and convergence motion─in photosphere is discussed. And their physical relationships with filament activation and solar flare areanalyzed as well. The results obtained are as follows: (1) The horizontal motion of photospheric matter plays an important role in filament activation and solar flare drive. (2) The filament activation, as one of the precursors of flare is determained basically by the current increase and evolution of background magnetic field. The complexity of these processes leads to variety of physical mechanism and morphology of flares.