The First Spectral Analysis of Solar Radio Spike Event  

作　　者：XU Fu-Ying LIU Yu-Ying FU Qi-jun WU Hong-Ao 许富英;刘玉英;付其骏;吴洪敖(Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210008;Beijing Astronomical Observatory,Chinese Academy of Sciences,Beijing 100012;National Astronomical Observatories,Chinese Academy of Sciences)

机构地区：[1]Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210008 [2]Beijing Astronomical Observatory,Chinese Academy of Sciences,Beijing 100012 [3]National Astronomical Observatories,Chinese Academy of Sciences

出　　处：《Chinese Physics Letters》2000年第6期460-462,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation under Grant Nos.19833050 and 49990451,and by a Major Project of the Chinese Academy of Sciences;We would like to thank Professors FANG Cheng and HUANG Guang-li for helpful discussions.

摘　　要：The first spectral analysis of a spike event has been performed.It was found that the peak frequency of spectrum of the spike event on Oct.2,1993 drifted from higher to lower frequency for the first group of spikes,but the frequency remained almost the same for the second group.Only if the mean energy of electron beam is a monotonic or random function of time and its pitch angle is a monotonically decreasing function of mean energy,then the different observed characteristics of evolution of the peak frequency with time may be interpreted by the location of resonant circle.The spike radio emissions with one and the same peak frequency probably originated from the same region of electron cyclotron maser instability.

关 键 词：originated MONOTONIC SPECTRUM 

分 类 号：TL5[核科学技术—核技术及应用]