耀斑日冕硬X射线源观测研究
发布时间：2019-06-04 10:24
【摘要】：对于足点被日面边缘遮挡住的耀斑的观测研究是诊断日冕硬X射线辐射的一个重要方法.通过统计分析RHESSI(Reuven Ramaty High-Energy Solar SpectroscopicImager)卫星观测到的71个此类耀斑硬X射线源发现,前人提出的两类源,即日冕X射线辐射中热辐射与非热辐射源区空间分离较小的源和分离较大的源,在能谱、成像、光变曲线以及GOES持续时间等方面都没有显著的区别,其中辐射区的面积、耀斑总热能以及GOES持续时间与分离距离之间有很好的相关性.这些结果支持近年来提出的一些耀斑统一模型.同时也表明Masuda耀斑只是一类非常特殊的事件,不具有日冕硬X射线辐射的一般特征.
[Abstract]:The observation and study of flares whose feet are obscured by the edge of the solar surface is an important method for the diagnosis of coronal hard X-ray radiation. Through statistical analysis of 71 hard X-ray sources of this kind of flares observed by RHESSI (Reuven Ramaty High-Energy Solar SpectroscopicImager) satellite, it is found that there are two kinds of sources proposed by previous researchers. That is, there is no significant difference in energy spectrum, imaging, light variation curve and GOES duration between thermal radiation and non-thermal radiation source region in coronal X-ray radiation, in which the area of radiation area is not significantly different from that of non-thermal radiation source region. There is a good correlation between the total thermal energy of flares and the duration of GOES and the separation distance. These results support some unified flares models proposed in recent years. At the same time, it is also shown that Masuda flares are only a kind of very special events and do not have the general characteristics of coronal hard X-ray radiation.
【作者单位】： 中国科学院紫金山天文台;中国科学院暗物质与空间天文重点实验室;中国科学院研究生院;
【基金】：国家自然科学基金项目(10833007,11078025) 973项目(2011CB811402,KJCX2-EW-T07)资助
【分类号】：P182.52
[Abstract]:The observation and study of flares whose feet are obscured by the edge of the solar surface is an important method for the diagnosis of coronal hard X-ray radiation. Through statistical analysis of 71 hard X-ray sources of this kind of flares observed by RHESSI (Reuven Ramaty High-Energy Solar SpectroscopicImager) satellite, it is found that there are two kinds of sources proposed by previous researchers. That is, there is no significant difference in energy spectrum, imaging, light variation curve and GOES duration between thermal radiation and non-thermal radiation source region in coronal X-ray radiation, in which the area of radiation area is not significantly different from that of non-thermal radiation source region. There is a good correlation between the total thermal energy of flares and the duration of GOES and the separation distance. These results support some unified flares models proposed in recent years. At the same time, it is also shown that Masuda flares are only a kind of very special events and do not have the general characteristics of coronal hard X-ray radiation.
【作者单位】： 中国科学院紫金山天文台;中国科学院暗物质与空间天文重点实验室;中国科学院研究生院;
【基金】：国家自然科学基金项目(10833007,11078025) 973项目(2011CB811402,KJCX2-EW-T07)资助
【分类号】：P182.52
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