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OSCILLATION OF THE POLARIZED RADIO EMISSION "THE SUN AS A STAR"
A.G. Tlatov1 , A. Riehokainen
1 2

Kislovo dsk Solar Station of the Pulkovo Astronomical Observatory, Russia 2 Tuorla Observatory, Turku University, Finland solar@narzan.com

We investigated variations of the radio emission of the whole Sun at 1.76 cm wavelength obtained and archived at the Nob eyama radio heliograph in 1992-2006. For this purp ose the daily data of the intensity and also right/left circular p olarization of the radio emission with one-second average were pro cessed. It was found that 3 minutes oscillations are present at the different phases of solar activity, including the minimum of activity. Esp ecially conspicuous these oscillations present in a difference b etween the right and the left circular p olarization. Intensity of the oscillations changes with a level of the solar activity. Sp ectral analysis of the presence of 3-minute oscillations in p olarization of the solar radio emission shows that there exist a mo dulation with the p erio ds of 27 and 157 days. During the minimum activity the main p erio ds of the 3 minutes oscillations are slightly shorter than during the maximum activity.