论文标题
对多个波长的耀斑排放的研究
An investigation of flare emissions at multiple wavelengths
论文作者
论文摘要
我们报告了2014年7月7日的四种太阳火光的多波长观测。我们首先根据柔软的X射线（SXR）和极端紫外线变异性实验和GE OPESTARICATION ORBISERATION ORBISERARY环境卫星选择这些耀斑。然后从大气成像组件（AIA）测量的全盘图像中鉴定出它们的位置和几何形状，并确定不同通道中光曲线之间的时间延迟。使用差分排放度量法估计电子数密度。我们发现，四个耀斑中的三个在冲动阶段（即AIA 131 A和94 A）中显示出SXR通道和高温（> 6 MK）EUV波长的强烈排放，然后它们随后在中等温度（〜0.6-3 mk）的EUV通道中发出峰值辐射。此外，它们持续很长时间，并且具有较小的电子密度，这可能是由热弥漫性耀斑环的相互作用驱动的。在所有观察到的波长中，几乎同时只有一个耀斑散发辐射，持续时间相对较短，并且具有较大的电子密度。它还伴随着III型无线电爆发。 EUV通道的明亮发射可能与相关的灯丝相对应。
We report multi-wavelength observations of four solar flares on 2014 July 07. We firstly select these flares according to the soft X-ray (SXR) and extreme ultraviolet (EUV) emissions recorded by the Extreme Ultraviolet Variability Experiment and Geostationary Orbiting Environmental Satellites. Then their locations and geometries are identified from the full-disk images measured by the Atmospheric Imaging Assembly (AIA), and the time delays among the light curves in different channels are identified. The electron number densities are estimated using the Differential Emission Measure method. We find that three of four flares show strong emissions in SXR channels and high temperature (>6 MK) EUV wavelengths during the impulsive phase, i.e., AIA 131 A and 94 A, and then they emit peak radiation subsequently in the middle temperature (~0.6-3 MK) EUV channels. Moreover, they last for a long time and have smaller electron densities, which are probably driven by the interaction of hot diffuse flare loops. Only one flare emits radiation at almost the same time in all the observed wavelengths, lasts for a relatively short time, and has a larger electron density. It is also accompanied by a type III radio burst. The bright emission at the EUV channel could be corresponding to the associated erupting filament.
