The Dynamics associated with Radio Spike Burst Emission

Josef I. Khan

Henry Aurass

We present the results of an analysis of observational data for radio spike bursts observed with the Solar Radio Spectrometers of the Astrophysikalisches Institut Potsdam. Using radio imaging data from the Nancay Radioheliograph we are able to determine the location of the spike bursts in relation to the flare and its environment as seen in Yohkoh Soft X-ray Telescope (SXT), Hard X-ray Telescope (HXT) and Solar and Heliospheric Observatory (SOHO) Extreme ultraviolet Imaging Telescope (EIT) images. The spike burst emission originated high in the corona far above the soft X-ray loop associated with the hard X-ray emitting regions.

Interesting dynamics are observed in association with this radio spikeburst event. Our results show that these spike bursts are clearly associated with the compression of magnetic field lines (presumably leading to magnetic reconnection). However, our results indicate that the spike burst emission results as a side-show to the main energy release.