A study of giant radio galaxies at RATAN-600
  We report the results of flux density measurements in the extended components of thirteen giant radio galaxies, made with the RATAN-600 in the centimeter range. Supplementing them with the WENSS, NVSS and GB6 survey data we constructed the spectra of the studied galaxy components. We computed the spectral indices in the studied frequency range and demonstrate the need for a detailed account of the integral contribution of such objects into the background radiation. 
M.L. Khabibullina, O.V. Verkhodanov, M. Singh, A. Pyria, S. Nandi,   N.V. Verkhodanova
astro-ph.CO