A Discussion on solar studies with special reference to space observations - New results of x-ray flare studies

Abstract
Polarization of X-ray emission is found in the wavelength band around 0.1 nm during the rising phase of three X-ray flares. This shows that in the X-ray flare regions directed electron beams are present. It is established that X-ray flare regions generally have a filamentary structure with bright knots and rapid spatial alterations. Very short X-ray bursts are frequently observed in some flare regions. The region of an X-ray flare may be considered as a two-component plasma the main component with a temperature of about 7 to 9 x 10 6 K, an emission measure of about 0.02 to 0.1 Baumbach and an electron density 1 to 2 x 10 10 cm-3 containing a dispersed hot (up to 15—30 x 10 6 K.) small nuclei having an overall emission measure one order of magnitude smaller.

This publication has 0 references indexed in Scilit: