5:15 PM - 6:30 PM
[PEM19-P04] Relationship between solar flare level and occurrence characteristics of type III bursts
Keywords:radio burst, flare, particle acceleration
In this study, we have analyzed spectral structures of type III bursts observed with AMATERAS, the meter wave range radio spectro-polarimeter for solar radio observations at Tohoku University. We have compared frequency spectral with time variation of GOES soft X-ray flux, and found that type III bursts often appeared in the non soft X-ray flare period having almost same structure as in the soft X-ray flare period. This fact indicates some particle acceleration processes occurred even in the non flare period. We have investigated spectral characteristics, such as drift rates and intensities, of type III bursts for the periods of both flare and non flare to reveal difference of particle acceleration processes.
In the presentation, we will show the relation between occurrence characteristics of type III bursts observed in 2014 with AMATERAS and GOES soft X-ray flux level, and will discuss particle acceleration processes particularly in the non flare periods.