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

TL;DR

This study combines microwave, EUV, and coronagraph observations to analyze a filament eruption, revealing detailed dynamics, temperature components, and interactions associated with a flare and CME.

Contribution

It provides a multi-wavelength analysis of filament eruption dynamics, temperature structure, and filament-flare interactions, enhancing understanding of eruption mechanisms.

Findings

Filament reached heights above 1 Rs with velocities up to 1100 km/s.

Detected multiple temperature components in microwave images.

Observed discrepancies between computed and observed brightness temperatures.

Abstract

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.