活动区的电流系和耀斑  

THE CIRCUITS IN ACTIVE REGIONS AND FLARES

作　　者：许敖敖[1] 吴式灿[2] 

机构地区：[1]南京大学天文系,南京210008 [2]阿拉巴马大学

出　　处：《天文学报》1993年第2期181-188,共8页Acta Astronomica Sinica

摘　　要：本文广泛地讨论了以Kuperus-Raadu模型和Kippenhahn-Schluter模型为代表的两类电流暗条在活动区背景磁场中的演化、运动规律及其与耀斑爆发的物理联系。基于这种理论框架,分析了活动区磁通量变化作为耀斑先兆的可能性。并进一步探讨了暗条内部电流分布与暗条电流强度的关系,以及它对耀斑现象的影响。所得结果在总体上与观测相符。这表明,建立在活动区电流暗条演化和运动基础上的耀斑理论框架是合理的。In this paper, we discuss widely the evolution and motion of two kinds of current filaments in the background magnetic fields, as well as the physical relation to the flare erutptions. In terms of this theoretical framework we analyse the possibility of flare precursor origin-ated from the variation of the magnetic flu~ in the active regions, furthermore, study the relationship between the distribution of currents inside filaments and the current intensity of filaments, as well as current distribution's effect on the flare precess. Our calculated results coinside with the observational data on whole. It is indicated that the flare theoretical framework which is based on the evolution and motion of current filament in the active regions is reasonable.

关 键 词：太阳 活动区 电流系 耀斑 

分 类 号：P182.24[天文地球—天文学]