| 太阳的磁绳暗条和一个Ⅲb级耀斑 |
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| 引用本文： | 张延安,宋慕陶,季海生.太阳的磁绳暗条和一个Ⅲb级耀斑[J].天文学报,2002,43(3):236-241,T001,T002. |
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| 作者姓名： | 张延安 宋慕陶 季海生 |
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| 作者单位： | 中国科学院紫金山天台,南京,210008 |
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| 基金项目： | 国家自然科学重点基金(19833050)资助 |
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| 摘 要： | 2000年9月14－18日在紫金山天文台赣榆观测站观测到太阳上有一个中小型活动区，黑子面积不大，但有一个奇特的活动区暗条，16日产生了一个Ⅲb级耀斑，有较强的地球物理效应。计算该区的磁结构，结果发现此磁绳状暗条与磁中性线附近低磁弧系相关，磁场在磁绳附近有强剪切，QSL分析显示三维磁重联能够在暗条附近出现，这可解释大耀斑的形成。
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| 关 键 词： | 磁绳暗条 太阳 耀斑 MHD 黑子 QSL分析 |
A Ⅲb Flare and a Rope-Shaped Filament |
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| ZHANG Yan-An SONG Mu-Tao JI Hai-Sheng.A Ⅲb Flare and a Rope-Shaped Filament[J].Acta Astronomica Sinica,2002,43(3):236-241,T001,T002. |
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| Authors: | ZHANG Yan-An SONG Mu-Tao JI Hai-Sheng |
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| Abstract: | A tiny active region NOAA9165 with its sunspots of ~700x10-6 disk area is observed at Ganyu-station, Purple Mountain Observatory. It contains a peculiar active spiral filament near which occurs a large flare of IIIb importance with a relatively strong geophysical effect. Computing its magnetic topology we discover that such spiral filament is associated with the lower height-located magnetic loop systems and the strong magnetic shear near the inversion line of magnetic field. Using QSL analysis, it is shown that 3D-magnetic reconnection may happen in the vicinity of this filament which can be used to explain the IIIb flare appearance. |
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| Keywords: | Sun: atmosphere MHD |
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