Relation between millimeter wavelengths emission and high-energy emission for active galactic nuclei

After comparing the Aux densities of a sample of active galactic nuclei det ected fly energetic gamma-ray experiment telescope at 90 and 230 GHz with t he gamma-ray emissions detected by Compton Gamma-nay Observatory and x-ray emission, a strong correlation between the emission at the millimeter wavel ength and the gamma-ray emission is found. The average flux density of x-ra y is almost proportional to the average flux density at the millimeter wave length for quasars detected by energetic gamma-ray experiment telescope, wh ich strongly supports the previous idea that the x-ray emissions of this ki nd sources are mainly produced by synchrotron self-Compton process.