摘要
参加了Ｆｌａｒｅｓ２２和Ｍａｘ＇９１国际联合观测之后，我们处理了三个频率（１．４２，２．８４，３．６７ＧＨｚ）和四个频率（１．４２，２．００，２．８４，４．００ＧＨｚ）或（１．４２，２．１３，２．８４，４．２６ＧＨｚ）快速采样射电望远镜的观测资料。结果除了发现射电爆发源的局部区域中存在有射电辐射的第四种基本分量而外，还在微波爆发快速精细结构中发现了三种基本时间单元。其量级分别是：０．１秒＞τ１≥１毫秒；１秒＞τ２≥０．１秒；１００秒＞τ３≥１秒。尽管出现在各自基本时间单元内的ＦＦＳ事件的形态及特性各自不同，但是，叠加在射电爆发背景之上的特性，构成了它们的共同属性。三种基本时间单元的确认，对于研究微波快速活动的精细时间结构，划分ＦＦＳ事件的种类找到了根据。三种基本时间单元的研究，对于深入探讨产生ＦＦＳ源的ＥＣＭ理论，也具有重要的科学价值。
After the international joint observation of the Flares 22 program and Max 91 Campaign, our high time-resolution data observed with fast-sampling radiotelescopes at three frequencies(1.42,2.28,and 3.67GHz) and four frequencies(1.42,2.00,2.84,and 4.00 GHz) or (1,42, 2.13,2.84,and 4.26 GHz) were processed.Besides finding the fourth basic component of the solar radio emission,which generates on a partial region of the radio burst source, three basic time units on the fast fine structures of solar microwave bursts are discovered. Their order of magnitude of time are 0.1s>τ1≥1ms:ls>τ2≥0.1s;100s>τ3≥1s respectively.Even though the morphological properties of fast fine structures occurred on every basic time unit are different,the characteristice superimposed on the radio burst is their common property.The confirmation of three basic time units provides the scientific basic for study the fine time structures of solar microwave fast activities and for separation of the category of fast fine structures.The study of three basic time unite has a scientific significance for research on the theory of electron cyclotron maser generated in the source of fast fine structures of solar microwave bursts.
出处
《云南天文台台刊》
CSCD
1995年第4期1-5,共5页
Publications of the Yunnan Observatoty
基金
国家自然科学基金
