Computer Science
Scientific paper
Mar 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sosyr..40..163k&link_type=abstract
Solar System Research, Volume 40, Issue 2, pp.163-168
Computer Science
1
95.85 Bh, 96.60 Qe
Scientific paper
The study of the X5 flare of October 23, 2003, was used to develop a method of estimation of the proportion between hot and cold plasma above active regions in the solar corona. The flare occurred in the complex region NOAA 0486+0488, which appeared during the declining phase of the current solar cycle and has attracted attention of many researchers. The radio burst corresponding to this event was observed during the postburst increase of brightness (PBI) by the Large Pulkovo Radio Telescope. In the X-ray wave range, the data from the Geostationary Operational Environment Satellite (GOES) were used. It was found that, in order to explain both the radio and X-ray results obtained during the PBI phase and interflare periods in subsequent days, one must assume the coexistence of hot loops (5 10 MK) and cold plasma (1 3 MK) in the magnetosphere of the active region. Comparison of the emission measures shows that the fraction of hot plasma is much less than 50%; nevertheless, its density is probably higher than that of the surrounding cold plasma by a factor of 3 6.
Borisevich T. P.
Korzhavin A. N.
Peterova Natalia G.
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