摘要
本文根据4个双带耀斑脉冲相开始前后暗条运动规律的观测资料,并基于Kuperus-Raa-du暗条(日珥)模型,利用暗条电流演化和运动的能量方程及动量方程,得到了脉冲相开始前后暗条电流及总能量随时间的变化曲线.令人惊异地发现:4个耀斑的脉冲相开始时刻,全部与暗条能量极大时刻相一致,即脉冲相开始后暗条能量下降,且能量减小的量级也大致与耀斑所需能量相符.此外,还发现耀斑的X射线级别,基本与爆发前暗条能量增长率成正比.这些都显示了耀斑爆发与暗条电流演化之间的内禀关系:耀斑的出现是由于暗条的爆发,耀斑的能量来源于暗条电流.这无疑给耀斑——暗条电流模型提供了一个强有力的观测证据.
Using the observational data about the laws of motion of four filaments related to flares before and after the beginning of the impulsive phase, we have solved the momentum equation and the energy equation of evolution and movement of filament currents in terms of the Kuperus-Raadu prominence (filament) model, and obtained the curves of change of the current intensity and total energy of filament currents with time. It is very surprising that the beginning moments of impulsive phase of the flares all agree with the maximum moments of the filament energy, namely after the beginning of the impulsive phase of the flares the energy of the filaments decreases, and the scales of the decreasing energy are equal to those of the energy emitted by flares. Moreover, it is also found that the importance of X-ray flares is proportional to the increasing rate of filament energy before the occurrence of flares. These results show the intrinsic relationship between flare eruption and filament, i.e. the explosion of filaments causes the appearance of flares, and the energy of flares is transported by filament currents.
出处
《天文学报》
CSCD
北大核心
1991年第4期343-352,共10页
Acta Astronomica Sinica
基金
中国科学院自然科学基金
关键词
耀斑
爆发
暗条
电流
模型
Increase of filament currents—Eruption of flares—Observed evidences
