Multiple-frequency measurements of a flare continuum event

An analysis of a meter-wavelength continuum observed during a Type II solar burst is presented. Spectral recordings were made in the 400-2000 MHz range, followed by spectral spreading and an exponential intensity increase, after a Type I event had subsided. The continuum source was characterized as an arch-like structure oriented in an N-S direction, with the southern footprint situated in the same place as that of the eastern footprint of the previous storm. The continuum is suggested to have been caused by electrons confined and accelerated in a region behind the shock front. A coronal mass transient is identified as the most likely continuum source. The sequence of the FC II event observed is qualitatively modeled as a shock wave delineating the outer edge of the transient activity and preheating the plasma. The high levels of magnetic turbulence present in the shock are caused by the shock interacting with the ambient magnetic fields.