伴随米波Ⅲ型爆发的快速脉动现象的观测分析  

Observations and Analysis of Solar Radio Narrow-Band Fast Pulsation Phenomena Associated With Metric Type III Burst

作　　者：马媛[1] 谢瑞祥[1] 郑向明[1] 

机构地区：[1]中国科学院国家天文台云南天文台,昆明650011

出　　处：《天文学进展》2003年第2期174-179,共6页Progress In Astronomy

基　　金：国家973项目(G20000784)资助课题

摘　　要：统计分析了太阳22周峰年期间云南天文台声光频谱仪在230～300MHz频率范围,记录到的Ⅲ型爆发和毫秒级快速脉动共存事件。发现有两种不同的脉动现象:(1)普通型脉动;(2)包迹型脉动。并在此基础上对Ⅲ型-脉动共存事件与之对应的光学活动及相关事件,脉动的形态、周期、带宽等观测特征作了分析和讨论。The type Ⅲburst-ms fast pulsation events, corresponding optical activities and correlative events observed with the acousto-optic spectrograph at the Yunnan observatory during the 22nd solar cycle are statistically analyzed in this paper. We found two kinds of pulsation phenomena. Some basic characteristics of the pulsation events such as shape, period, frequency band in the 230-300 MHz range and relative solar active phenomena are obtained, and the production mechanism is qualitatively discussed.

关 键 词：射电天文学 快速脉动现象 统计 Ⅲ型爆发 太阳射电 米波 观测 

分 类 号：P162.11[天文地球—天文学] P161