1974年10月11日白光耀斑的光谱分析  

SPECTRAL ANALYSIS OF THE WHITE LIGHT FLARE ON 11 OCTOBER 1974

作　　者：尹素英[1] 方成[1] 丁明德[1] 日江井荣二郎 傅其骏[1] 

机构地区：[1]南京大学天文系,日本东京明星大学,中国科学院北京天文台

出　　处：《天文学报》1995年第3期279-287,共9页Acta Astronomica Sinica

基　　金：国家自然科学基金

摘　　要：１９７４年１０月１１日耀斑的光谱分析表明，连续发射和微波爆发几乎同时达到极大。在连续辐射极大时刻出现了高项巴耳末发射线和微弱的巴耳末跳跃，所有这些说明这个耀斑是Ⅰ型白光耀斑。我们发现，在这个耀斑连续发射的极大时刻，ＣａＩＩＫ线的Ｋ＿１．处强度大大增强，约达到连续辐射强度的一半，对应的辐射温度达到５７１６Ｋ。这个反常增强的持续时间小于４分钟。现有的半经验模型似不能给出这样的结果。色球压缩区也不能给出解释。The spectral analysis of the 1974 Oct. 11 flare indicates that the continuum emission and the microwave burst peaked nearly at the same time. The high Balmer lines and a weak Balmer jump appeared at the continuum peak time. All these imply that the flare can be classified as a Type I WLF. It was found that at the continuum peak time, the intensity of K1 in the CaII K line increased much and reached nearly half of the continuum intensity, which corresponds to a radiative temperature of 5716K! The duration of this unusual increase is less than 4 min.It seems that neither existing semi-empirical models nor the chromospheric condensation can reproduce this characteristic.

关 键 词：谱线轮廓 白光耀斑 耀斑 光谱分析 

分 类 号：P182.52[天文地球—天文学]