1989年4月9日射电爆发中的准周期振荡特征

The Quasi-Periodic Oscillation of Solar Radio Burst Observed on April 9, 1989

本文对1989年4月9日在2840 MHz上观测到的微波爆发进行分析,发现该爆发存在几十到几百秒的准周期振荡现象。这种现象可能与磁环的准周期现象有关,应遵从磁流体力学规律。通过简单初步分析,获得一些有意义的结果。

We have observed and recorded the great solar microwave burst of 1989 April 9 at 2840 MHz with a time resolution of 2 seconds. The quasi-periodic oscillations exhibited periods of about several tens to several hundreds of seconds and might be associated with quasi-periodic magnetic loop or magnetohydrodynamic pheno mena.