THE FILAMENT DISAPPEARANCE OF 7 MAY 1992 (THE EBI)

The 7 May 1992 filament disappearance in the low corona is analyzed. T he cool and hot components of this event are studied, using H alpha, s oft X-ray and radio data. We first show the general effect of the disp arition brusque (DB) on the life of the filament, which was a quiescen t filament in the vicinity of an active region, and then give the hist ory of the development of the 7 May event. The main stages of the even t are: (i) the formation of hot arches spanning the cool filament; (ii ) rise of the filament, with plasma ejection into the corona, in which we note some spreading of loops from the main body, with two distinct rising velocity phases of the H alpha filament; (iii) formation of X- ray arches below the filament, the foot points of the arcades being tw o-ribbon H alpha hare patches. The dynamics of H alpha and X-rays feat ures are given.