EVIDENCE FOR SAKHAROV OSCILLATIONS OF INITIAL PERTURBATIONS IN THE ANISOTROPY OF THE COSMIC MICROWAVE BACKGROUND

In the framework of the Cold Dark Matter cosmological model we obtain the explicit analytical expressions for the spectral representation of the anisotropy of the cosmic microwave background and the correspondi ng analytical expressions for the angular correlation function taking into account the width of antenna. We discuss the peculiar periodic de pendence of the initial spectrum of the baryonic matter distribution o n wavelength (Sakharov oscillations). This effect is specific for acou stic modes of perturbations in cosmic plasma in any cosmological model as a result of the recombination. Sakharov oscillations should manife st themselves by the specific anomalies in the angular correlation fun ction of the microwave background anisotropy on scales 10' - 2-degrees , practically in any cosmological model. We discuss special methods fo r filtering of this effect in the observational data.