AR5744活动区M4耀斑环珥系的H_α观测和分析

Ha Observations of the Loop Prominence Systems of An M4 Flare in AR5744

本文对1989年10月13日产生在小黑子区附近的两个不同形状的活动日珥作了分析,结果表明:(1)针柱形和环珥系脚点与附近的小黑子群无任何接触。(2)环珥群由多个环系组成,各环系中的物质分布不均匀。(3)环珥群环脚分布不对称,一边的环脚较密集,另一边的环脚较疏散。(4)该环珥群消失的过程是由环脚较疏散的一边逐渐向环脚较密集一边消失。(5)环珥群顶部较亮。

Two active prominences with different shapes produced near the small sum-pot region on 13 October 1989 are analysed in this paper. The results show.(1) The needle-like cylinder and the foot points of the loop prominence system are out of touch with the group of small sunspots in the neighbourhood of them. (2) The loop prominence group are composed of several loop systems and the matter in each of the systems distributes unevenly. (3) The loop feet of the loop prominence group distribute asymmetrically, with those on one side being clorely packed and those on the other side relaxed. (4) The loop prominence group gradually disappears from the relaxed side to the closely packed side. (5) The top part of the group is brighter than the other parts.