| 太阳微波低频段射电III型爆发的一些特性分析 |
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| 引用本文： | 谢瑞祥,汪敏.太阳微波低频段射电III型爆发的一些特性分析[J].中国天文和天体物理学报,1998(1). |
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| 作者姓名： | 谢瑞祥 汪敏 |
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| 作者单位： | 中国科学院云南天文台 |
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| 基金项目： | 中国科学院重点项目,天文委员会基金 |
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| 摘 要： | 本文介绍了云南天文台四波段（１．４２，２．１３，２．８４和４．２６ＧＨｚ）太阳射电高时间分辩率同步观测得到的五个微波ＩＩ型爆发事件，它们具有宽频带、长和短寿命、内向和外向快速频漂等特征．观测事例表明，非热电子束引起的等离子体辐射和电子回旋脉泽辐射两种机制都可能发生．这些观测特征既不完全同于米波—分米波ＩＩ型爆发，也不完全同于微波高频段ＩＩ型爆发，说明在微波低频段可能存在二重性或过渡现象
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| 关 键 词： | 太阳射电 微波爆发 精细结构 |
Behavior Analysis of Type III Solar Low frequency Microwave Bursts |
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| XIE Rui,xiang,WANG Min.Behavior Analysis of Type III Solar Low frequency Microwave Bursts[J].Chinese Journal of Astronomy and Astrophysics,1998(1). |
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| Authors: | XIE Rui xiang WANG Min |
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| Abstract: | Five type III microwave bursts observed by using the solar radio synchronous observational system (with high temporal resolution at 1.42, 2.13, 2.84 and 4.26 GHz) of Yunnan Observatory are presented in this paper. These bursts characteristics are contained by broad instantaneous bandwidths, long and short durations, positive and negative fast drifting rates, and so on. These events denote that both plasma emission of nonthermal electron beams and radiation of electron cyclotron maser are possible. These characteristics neither similar to the metric and decimetric type III bursts nor to the microwave high frequency type III bursts. Thus it may be interpreted by that there is double features or transition phenomena in the low frequency microwave band. |
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