Dynamics of microwave brightness distribution in the giant 24 August 2002 flare loop

Details Dynamics of microwave brightness distribution in the giant 24 August 2002 flare loop Dynamics of microwave brightness distribution in the giant 24 August 2002 flare loop

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009iaus..257..345r&link_type=abstract

Universal Heliophysical Processes, Proceedings of the International Astronomical Union, IAU Symposium, Volume 257, p. 345-347

Astronomy and Astrophysics

Astronomy

Solar Flare, Microwave Radiation, Magnetic Loop

Scientific paper

We have found a similar tendency of the spatial dynamics at 34 GHz for all major temporal sub-peaks of the burst with the re-distribution of the brightness from the footpoints (on the rising phase of each peak) to the upper part of the loop (on the decay phase). Observed dynamics is interpreted by the re-distribution of accelerated electrons number density with their relative enhancement in the loop top. Results of diagnostics show that the ratio of non-thermal electron number density in the loop top and in the footpoint changes 7 times from the peak to decay phase. Model simulations by solving the Fokker-Planck equation allowed to determine an injection type which is able to result in necessary dynamics of energetic electrons.

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