Microwave and EUV Observations of an Erupting Filament and Associated Flare and CME

C. E. Alissandrakis, A. A. Kochanov, S. Patsourakos, A. T. Altyntsev, S. V. Lesovoi, N. N. Lesovoya

Published 2013-09-06, updated 2013-10-14Version 2

A filament eruption was observed with the Siberian Solar Radio Telescope (SSRT) on June 23 2012, starting around 06:40 UT, beyond the West limb. The filament could be followed in SSRT images to heights above 1 Rs, and coincided with the core of the CME, seen in LASCO C2 images. We discuss briefly the dynamics of the eruption: the top of the filament showed a smooth acceleration up to an apparent velocity of 1100 km/s. Images behind the limb from STEREO-A show a two ribbon flare and the interaction of the main filament, located along the primary neutral line, with an arch-like structure, oriented in the perpendicular direction. The interaction was accompanied by strong emission and twisting motions. The microwave images show a low temperature component, a high temperature component associated with the interaction of the two filaments and another high temperature component apparently associated with the top of flare loops. We computed the differential emission measure from the high temperature AIA bands and from this the expected microwave brightness temperature; for the emission associated with the top of flare loops the computed brightness was 35% lower than the observed.