We discovered sub-second-time-scale propagation
of non-thermal source by Nobeyama Radioheliograph
1) ~100,000 km/sec ‘rapid’ propagation
direct precipitation
?
2) ~10,000 km/sec ‘slow’ propagation
diffusion of
non-thermal electrons ?
3) Spectrum of loop-top emission is harder than that
of the footpoints.
(Identification of thermal and non-thermal
emission)