一个复杂大爆发的分析

Analysis of a Complex Solar Radio Burst

本文分析了2002.7.23国家天文台云南天文台射电频谱仪在625～1500MHz、2600～3800MHz和5200～7600MHz记录到的复杂型大爆发,将此爆发与Hα耀斑、冕物质抛射(CME)、硬X射线爆发及地球物理参数作了相关分析,得到这个事件的一些显著特征,认为这一事件电子的加速区在日冕的外层,接近625MHz的地方,并且多次发生磁重联,磁重联以后的衰变相是湍流加速过程。

A complex solar radio burst observed with the spectrometers of NAOC working at 625 - 1500 MHz, 2600 - 3800MHz, and 5200 - 7600 MHz was analyzed in this paper. We probe the correlations of the radio data with the data of Hα flares, CME, and Hard X-rays of the same underlying burst, as well as those of related （terrestrial） atmospheric events. We have found some prominent features about the burst. We think that the electron-acceleration site may be in the outer corona near the region corresponding to the frequency 625 MHz. We also think that the magnetic reconnection occurred several times, and the decay phase after the magnetic reconnection is a turbulence-acceleration process.