Quasiperiodic oscillations in the active solar regionsfrom the data of nobeyama radioheliograph |
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| Authors: | L N Dzhimbeeva |
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| Institution: | 1.Kalmyk State University,Elista,Republic of Kalmykia, Russia |
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| Abstract: | The use of integral characteristics of radio spots showed that in addition to the known 3–5-min oscillations, the above-spot
regions of sunspots exhibit quasiperiodic oscillations of intensity, perimeter, sectional area, and area of the surface of
the above-spot source radio image with periods in the ranges of 25–80, 90–110, 120–140, and 160–210 min. These periods are
observed for all spots studied using the different characteristics of a radio source, which does not contradict the interpretation
of these low-frequency oscillations as natural oscillations of spots near a certain position of stable equilibrium. |
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