Peculiarities of the microwave emission from active regions generating intense solar flares
- 1 April 2003
- journal article
- Published by Pleiades Publishing Ltd in Astronomy Letters
- Vol. 29 (4), 263-273
- https://doi.org/10.1134/1.1564858
Abstract
RATAN-600 multiwavelength observations of the Sun reveal sharp spectral inhomogeneities in the polarized radiation from active regions that produce intense flares. These events occur in a wide range of radio fluxes (0.05–10 s.f.u.) in a relatively narrow wavelength range (2–5 cm). They are detected on time scales from several hours to several days before and during an intense flare. We analyze the detected events and their relationship to the preliminary phase of intense flares. Significant statistical material was obtained in 2001. The new flare-plasma properties can be used to test existing solar-flare models and to develop new criteria of flaring activity.Keywords
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