Observations of a post-flare radio burst in X-rays

Astronomy and Astrophysics – Astronomy

Scientific paper

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Coronal Loops, Electron Density (Concentration), Solar Flares, Solar Maximum Mission, Solar Radio Bursts, X Ray Spectroscopy, Astronomical Models, Brightness, Energy Spectra, H Alpha Line, Radio Sources (Astronomy), Thermal Emission

Scientific paper

More than six hours after the two-ribbon flare of May 21, 1980, the hard X-ray spectrometer aboard the SMM imaged an extensive arch above the flare region which was found to be the lowest part of a stationary post-flare noise storm recorded at the same time at Culgoora. The bent crystal spectrometer aboard the SMM confirms that the arch emission was basically thermal. Variations in brightness and energy spectrum at one of the supposed footpoints of the arch are seen as correlation in time with radio brightness, suggesting that suprathermal particles from the radio noise regions dumped in variable quantities onto the low corona and transition layer.

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