摘要
本文收集了１９８６年２月４日大耀斑的Ｈα、微波、Ｘ射线和γ射线全波段的观测资料。利用暗条电流环模型分析了该耀斑的物理过程。测量了活动暗条的上升运动，求解了动量方程和能量方程。结果表明：（１）１９８６年２月４日的３Ｂ／Ｘ３耀斑可能是由暗条电流环之间的合并不稳定性所致；（２）电阻撕裂模不稳定性是一种有效的耀斑前预热机制；（３）耀斑的高能观测资料进一步表明了电流环合并不稳定性是引起该大耀斑期间所有高能粒子几乎同时加速的可能的有效机制。
In this paper, the observational data of Ha, radio, soft X-ray, hard X-ray and r-ray for the 3B/3X flare on Feb.4, 1986 are collected. This flare is studied comprehensively by using the flare-filament current model. The rising moveinent of the filaments is measured.The momentum equation and the energy equation of filament current have been solved. The results show that (1)The 3B/X3 flare on Feb.4, 1986 was possibly caused by the current loop coalescence instability between two filament current loops: (2)The resistive tearing instability is an efficient Pre-heating mechanism of pre-flare phase; (3)The high energy data on Feb.4 flare further corrobrate that the current loop coalescence instability is a possibly efficient mechanism for the simultaneous acceleration of high energy particales during the flare.
出处
《天文学报》
CSCD
北大核心
1995年第3期301-308,T001,共9页
Acta Astronomica Sinica
基金
国家自然科学基金
关键词
耀斑
暗条电流系
电流环
稳定性
Major flare, Filament current loops, Coalescence instability of current loops
