1990年7月30日射电爆发中spike辐射的观测和讨论

The Spike Emissions Occurring in the Solar Radio Burst on 30 July 1990

本文简要地叙述了1990年7月30日伴随日面2B级光学耀斑发生的射电爆发,在2840、2640、和1420MHz波段上同步观测结果,其中包括射电爆发在以上波段的秒级时间轮廓和毫秒级时间尺度的spike辐射活动.对它们的形态和频率特征作了简要分析,同时对spike辐射的迴旋电子脉塞增长率、相对辐射频宽和准周期振汤的某些特征及辐射源区的某些物理参数,作了进一步的分析和量级的估算.

In this paper, the radio burst and the spike radiations at 2640 and 2840 MHZ on 30 July 1990, which were associated with a two-ribbon flare of importance 2B, are described. Their profiles with second and millisecond time scales and their frequency characters are briefly discussed. Moreover, the related emission bandwith, the growth rate of the electron cyclotron maser instability, the quasi-oscillations and some physical parameters of the radiation source region are analysed and estimated.