耀斑日冕硬X射線源觀測研究
發(fā)布時間：2019-06-04 10:24
【摘要】：對于足點被日面邊緣遮擋住的耀斑的觀測研究是診斷日冕硬X射線輻射的一個重要方法.通過統(tǒng)計分析RHESSI(Reuven Ramaty High-Energy Solar SpectroscopicImager)衛(wèi)星觀測到的71個此類耀斑硬X射線源發(fā)現,前人提出的兩類源,即日冕X射線輻射中熱輻射與非熱輻射源區(qū)空間分離較小的源和分離較大的源,在能譜、成像、光變曲線以及GOES持續(xù)時間等方面都沒有顯著的區(qū)別,其中輻射區(qū)的面積、耀斑總熱能以及GOES持續(xù)時間與分離距離之間有很好的相關性.這些結果支持近年來提出的一些耀斑統(tǒng)一模型.同時也表明Masuda耀斑只是一類非常特殊的事件,不具有日冕硬X射線輻射的一般特征.
[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.
【作者單位】： 中國科學院紫金山天文臺;中國科學院暗物質與空間天文重點實驗室;中國科學院研究生院;
【基金】：國家自然科學基金項目(10833007,11078025) 973項目(2011CB811402,KJCX2-EW-T07)資助
【分類號】：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.
【作者單位】： 中國科學院紫金山天文臺;中國科學院暗物質與空間天文重點實驗室;中國科學院研究生院;
【基金】：國家自然科學基金項目(10833007,11078025) 973項目(2011CB811402,KJCX2-EW-T07)資助
【分類號】：P182.52
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