1989年1月18日太阳白光耀斑的光学特征  

The Optical Characteristics of the Solar White-Light Flare on Jan. 18, 1989

作　　者：宣家余[1] 栾蒂[1] 王洪照[1] 

机构地区：[1]云南天文台

出　　处：《云南天文台台刊》1995年第1期20-31,共12页Publications of the Yunnan Observatoty

基　　金：中国科学院天文台和云南省科委基金

摘　　要：我们首次获得１９８９年１月１８日太阳白光耀斑的二维多波段光谱扫描、及同步的色球Ｈα单色光和准同步的光球黑子照相观测资料。对部分资料分析表明，该白光耀斑为多块结构，寿命长，主核位于光球磁纵场中性线上或附近，顺色球磁纵场演变，同暗条激活和谱斑密切相关。A White-Light flare ( hereafter WLF) appeared on solar disc on Jan. 18, 1989. We obtained the photographic data of two-dimensional multi-band spectral scanning, the synchronous Hα filtergrams and the quasi-synchronous photospheric sunspot of the flare. The analyses for a part of data show that the WLF presents the structure of the multiple patch which is (1.5-4) × 1017cm2 in size. Some of the patches last only for a few minute while others last over 40 min. The primary patches locate over or near a neutral line of the longitudinal fields of magnetic fields in the photosphere (which is δ configuration). The patches originally appear between the umbra and the penumbra, or between the penumbra and the background of the photosphere, as well as between the penumbra fibers, or on the large light bridge. The WLF bears closely relation to the plage that is near a small active filament and is affected by a mini-flare and its burst. This mini-flare could cause a WLF, and evolves along chromospheric fibers in position, dimension and brightness.

关 键 词：太阳 白光耀斑 光学特征 耀斑 

分 类 号：P182.52[天文地球—天文学]