摘要
本文基于耀斑现象与暗条活动的密切关系,提出活动区磁场由黑子磁场和暗条电流激发的磁场迭加而成;计算了Kippenhahn-Schlüter模型下暗条电流的变化和它的平衡高度间的关系,并将它与Van Tend和Kuperus的结果进行了比较.由此得出:(ⅰ)由于暗条电流系回路形式的多样性,当电流增大时,不同暗条具有完全不同的上升规律.(ⅱ)由暗条电流的增强和运动所引起的活动区磁通量变化的方式有活动区磁通量可能增加、减少或不变几种.(ⅲ)结合目前流行的耀斑模型,上述规律可被用来说明发生耀斑的可能高度和耀斑现象的多样性.
In terms of close relationship between flare phenomena and filament's actions, it is supposed that the magnetic fields in active regions consist of sunspot's magnetic fields and the magnetic fields caused by filament currents in this paper. According to Kippenhahn-Schlüter model, the relations between the changes of filament currents and equilibrium positions of the filaments are calculated and compared with Van Tend-Kuperus's results. These calculations indicate that (ⅰ) because circuits of filament current systems are various, when filament currents increase, the behaviours of uprising motion of each filament is various, (ⅱ) thus, possible ways of the variation of magnetic flux at an active region caused by the change of the cunent and the motion of the filament are increase, decrease and invariance and (ⅲ) taking the popular flare's models into account, the rules may be used to explain a variety of flare phenomena.
出处
《天文学报》
CSCD
北大核心
1990年第2期187-194,共8页
Acta Astronomica Sinica
