Computer Science
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mwoc.conf..169f&link_type=abstract
Multi-Wavelength Observations of Coronal Structure and Dynamics -- Yohkoh 10th Anniversary Meeting. Proceedings of the conferenc
Computer Science
1
Scientific paper
Very regular time variations of the 3 GHz radio flux observed during the 7 April 1997 flare are presented together with Yohkoh-SXT and SOHO-EIT observations. On lower frequencies (40-800 MHz) the variations were followed by several branches of type II radio burst. In the post-maximum phase of this flare the Yohkoh images indicate I-type of the flare loop interaction. The observations were analyzed and it was found that the data can be described by the current-loop coalescence model: the main period of the 3 GHz radio flux (about 100 s) corresponds to the repetition of the current-loop coalescence, and the radio double-peaks are associated with the maximum of the electric field component perpendicular to the interaction plane. The plasma beta-parameter in the current-loop coalescence process was estimated as 0.63. Indications of the beta-parameter increase during the flare are found.
Farnik Frantisek
Karlicky Marian
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