Clues on the cosmic evolution of radio AGNs from their large-scale clustering

Negrello M., Magliocchetti M., De Zotti G.

---

We present a theoretical analysis of the observed angular clustering of radio sources with S_{1.4GHz}>10 mJy on large scales(up to 10°).We find that the characteristic mass of the halo in which radio AGNs reside decreases from about 10^{15} M_{sun}/h at z=0 to the value appropriate for optically selected quasars,10^{13} M_{sun}/h,at z=1.5.This suggests that,in the redshift range probed by the data,radio AGNs are associated with the densest environments virializing at any cosmic epoch.