TEN-SECOND FLUCTUATIONS OF THE SOLAR RADIOEMISSION FLUXES IN THE PERIOD OF THE SOLAR RADIOBURSTS

O Sheiner

V.Fridman

The results of observations at the radio-astronomical station NIRFI \"Zimenki\" are examined. They are carried out in the period of the increased solar activity during July 2002 with the time resolution 0.2 s. at wavelengths 3 and 10 cm. For the spectral processing FFT procedure is used for the records being stationary on the base of the usual procedures. It makes possible to estimate the presence and the relative value of periodic components by a duration of up to 5 minutes.

In several records, which precede the large bursts of radio emission, the periods of ~ 10 seconds are recorded in 10-cm radio emission and somewhat larger in 3cm radio emission with an amplitude of less than 1% of the solar radio flux. The obtained result is close to the results of other authors, based on the observations of solar radio emission with the high spatial resolution. The analogous analysis of the temporary records of fluxes of radio emission just immediately after the end of burst shows the absence of the revealed spectral components in 10-cm emission and the presence of ten-second fluctuations in the 3-cm emission.

Thus, it is shown that the use of patrol multi wave observational data with the high sensitivity and a sufficient time resolution is possible for the analysis of the quasi-periodic components of radio emission and their dynamics in the periods of solar bursts.

The work is carried out with the support of Russian Fund of Basic Research (grant 03-02-16691), Ministry of Education (grant E02-11.0-27), FPSTP (Astronomy),.and FSTP \"Integration\" in the Part \"Space Weather\".