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Pulsating Solar Radio Emission

  • Alexander Nindos
  • Henry Aurass
Part of the Lecture Notes in Physics book series (LNP, volume 725)

Abstract

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∈dex waves!MHD waves 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.

Keywords

Solar Phys Radio Emission Radio Source Coronal Loop Radio Pulsation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer 2007

Authors and Affiliations

  • Alexander Nindos
    • 1
  • Henry Aurass
    • 2
  1. 1.Section of Astrogeophysics, Physics DepartmentUniversity of IoanninaIoannina GR-45110
  2. 2.Section of Astrogeophysics, Physics DepartmentAstrophysical Institute PotsdamD-14482 Potsdam

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