类太阳恒星耀斑光变轮廓特征分析  

Analysis of Light Curve Profile Characteristics for the Flares of Solar-type Stars

作　　者：云多 王华宁[1,2] 贺晗[1,2] 

机构地区：[1]中国科学院国家天文台,北京100012 [2]中国科学院太阳活动重点实验室,北京100012

出　　处：《天文学报》2016年第1期9-18,共10页Acta Astronomica Sinica

基　　金：国家自然科学基金项目(11303051;11403044;11273031;11221063);973项目(2011CB811406)资助

摘　　要：太阳耀斑是由于在太阳黑子附近磁场能量的突然释放所引起的爆发现象.人们发现在许多类太阳恒星上也有类似的耀斑(称类太阳恒星耀斑)出现.主要采用开普勒太空望远镜获取的数据,从中选取SC(Short Cadence)数据进行分析,找出类太阳恒星上耀斑光变轮廓的特征参数并做统计,总结耀斑的活动特点.分析结果表明:类太阳恒星耀斑的光变轮廓和爆发的特征时间与太阳耀斑的相似,这可以说明两种耀斑的物理机制相同.The solar flare is caused by the sudden release of magnetic energy around sunspot region. It had been found that many solar-type stars have the similar flare phenomenon （called the flares of solar-type stars）. In this paper, based on the short cadence data obtained by the Kepler space telescope, we find out the characteristic parameters of the light curve profiles of the selected stellar flare samples. Through the statistical analysis, the flare activity characteristics of solar-type stars are summarized. The result shows that the light curve profiles as well as the characteristic timeseales of the flares on the solar-type stars are similar to the flares on the Sun. This illustrates that the two kinds of flares have the same physical mechanism.

关 键 词：恒星 耀斑  恒星 类太阳 时间 方法:统计 

分 类 号：P144[天文地球—天体物理]