High-energy observations of solar flares

摘要: Extensive observations of solar flares made in high energy bands during the maximum present cycle are discussed with a special reference to results from HINOTORI, and attention relevant flare models. The hard X-ray (HXR) images HINOTORI showed mostly coronal emission at 20–25 keV suggesting that HXR is emitted multiple loops, consistent non-thermal electron beam model density corona. thermal seems be inconsistent some observations. Three types which have been classified Hinotori described, along newly discovered hot component 30–40 million K contributes emission. A summary given for characteristics release an impulsive burst; empirical explains simultaneous releases loops successive movements site as suggested morphology. discovery large blue-shifted plasma soft line spectrum leads quantitative arguments evaporating model. An electron-heated atmosphere appears explain various consistently.