耀斑日冕硬X射線源觀測研究
[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(xué)院紫金山天文臺;中國科學(xué)院暗物質(zhì)與空間天文重點(diǎn)實(shí)驗(yàn)室;中國科學(xué)院研究生院;
【基金】:國家自然科學(xué)基金項(xiàng)目(10833007,11078025) 973項(xiàng)目(2011CB811402,KJCX2-EW-T07)資助
【分類號】:P182.52
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