【19页精品】On the redshift cut-off for flat-spectrum radio sources

Abstract: We use data from the Parkes Half-Jansky Flat-Spectrum (PHJFS) sample(Drinkwater et al. 1997) to constrain the cosmic evolution in the co-movingspace density of radio sources in the top decade of the flat-spectrum radioluminosity function (RLF). A consistent picture for the high-redshift evolutionis achieved using both sim..