摘要
利用日本“Ｙｏｈｋｏｈ”卫星的资料及北京天文台２８４０ＭＨｚ的射电观测资料，对１９９２年６月７日的太阳爆发事件进行了分析，结果表明，在这次爆发的脉冲相期间存在着大小两种时间尺度的脉动分量，大尺度的脉动周期约为３０ｓ，小尺度脉动周期为１－４ｓ。利用硬Ｘ射线成像观测结果，发现大尺度的脉动与硬Ｘ射线源区的一系列变化相对应。文中给出了一个环－环相互作用的ＭＨＤ振荡调制物理图像。
In this paper we have analyzed the solar burst event of 1992-06-07 using both the HXR data from ' YOHKON' satellite and the radio data at 2840 MHz observed at Beijing observatory. The results show that there are two time scales for the impulsive components during the pulse phase. The larger scale impulses are found to be correlated with a series of variations in the HXR images of the source region. Based on a discussion of the mechanism of HXR and microwave radiation, we finally present a physical picture comprising loop-loop interaction and MHD oscillation modulation.
基金
国家自然科学基金
中国科学院科学基金
