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Pulsating Solar Radio Emission View all abstracts by submitter

Alexander Nindos   Submitted: 2006-02-01 04:29

A status report of current research on pulsating radio emission is given, based on working group discussions at the CESRA 2004 workshop. Quasi-periodic pulsations have been observed at all wavelength ranges of the radio band. Usually, they are associated with flare events; however since the late 90s, pulsations of the slowly-varying component of the Sun's radio emission have also been observed. Radio pulsations show a large variety in their periods, bandwidths, amplitudes, temporal and spatial signatures. Most of them have been attributed to MHD oscillations in coronal loops, while alternative interpretations consider intrinsic oscillations of a nonlinear regime of kinetic plasma instabilities or modulation of the electron acceleration. Combined radio spectroscopic observations with radio imaging and X-ray/EUV data have revived interest in the subject. We summarize recent progress in using radio pulsations as a powerful tool for coronal plasma and magnetic field diagnostics. Also the latest developments on the study of the physical processes leading to radio emission modulation are summarized.

Authors: A. Nindos, H. Aurass
Projects: None

Publication Status: Proceedings of CESRA Workshop 2004 The high-energy solar corona: waves, eruptions, particles, to be published in Lecture Notes in Physics, 2006 (paper accepted for publication on July 12, 2005)
Last Modified: 2006-02-01 04:29
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