Comparative Analysis of Nonthermal Emissions and Electron Transport in a Solar Flare

Abstract

We study nonthermal emission in a solar flare occurring on 2003 May 29using RHESSI hard X-ray (HXR) and Nobeyama microwave observations. Thisflare shows several typical behaviors of HXR and microwave emission:time delay of microwave peaks relative to HXR peaks, loop-top microwaveand footpoint HXR sources, and a harder electron energy distributionfrom the microwave spectrum than from the HXR spectrum. In addition, wefound that the time profile of the spectral index of the higher energy(>~100 keV) HXRs is similar to that of the microwaves, and is delayedrelative to that of the lower energy (