LARGE-SCALE ELECTRIC-FIELDS IN SOLAR-FLARE REGIONS

A method of separating electric field in the flare region in the poten tial and vortex (induced) parts is discussed. According to the propose d model, the motion of flare ribbons from the central line of the Bare region is caused by the vortex component of the coronal electric fiel d, while the motion of bright spots within the flare region towards th e central line is driven by the potential component of that field. The intensity of both the components of the flare region electric field i s estimated to equal approximately 1-3 V cm(-1), which provides the in put of the electromagnetic energy into the active region at a rate of about 10(10) erg cm(-2) s(-1).