Changes in coronal condensations emission after solar bursts at microwaves |
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Authors: | Pierre Kaufmann E Scalise Jr P Marques Dos Santos |
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Institution: | (1) Centre of Radio Astronomy and Astrophysics, Mackenzie University, São Paulo, Brazil |
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Abstract: | The amount of circular polarization of the total solar radio emission at 7 GHz present permanent changes after the occurrence of certain radio bursts associated with larger flares. For isolated S-components, associated with such flares the changes of the polarization degree
sranges between 0.004 to 0.1, and appears to be a function of the flare importance. A semi-qualitative interpretation associates
swith magnetic field reductions at the S-component, agreeing fairly well with a flare mechanism based on collisionless dissipation of magnetic energy, corresponding to energies in the range of 1030 to 1032 ergs, assuming an average model for the coronal condensations. |
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