Emission of gas and dust in clusters of galaxies in the radio range

Abstract

The consequences of assuming the presence of dust grains in the intergalactic medium of clusters of galaxies are considered. Under the assumption that the properties of the grains are similar to those of interstellar dust, the emission of the dust and gas in the wavelength interval 0.04-50 cm is calculated for the clusters in Coma and Perseus. It is shown that the emission of the dust cannot compensate the Syunyaev-Zel'dovich effect in the centimeter wavelength range. In the submillimeter region and, in part, in the millimeter region the emission from clusters of galaxies can appreciably exceed the microwave background.