We present a large-scale clustering analysis of radio galaxies in the Very Large Array ( VLA ) Faint Images of the Radio Sky at Twenty-cm ( FIRST ) survey over the Galaxy And Mass Assembly ( GAMA ) survey area , limited to S _ { 1.4 \textrm { GHz } } > 1 mJy with spectroscopic and photometric redshift limits up to r < 19.8 and r < 22 mag , respectively .
For the GAMA spectroscopic matches , we present the redshift-space and projected correlation functions , the latter of which yielding a correlation length r _ { 0 } \sim 8.2 h ^ { -1 } Mpc and linear bias of \sim 1.9 at z \sim 0.34 .
Furthermore , we use the angular two-point correlation function w ( \theta ) to determine spatial clustering properties at higher redshifts .
We find r _ { 0 } to increase from \sim 6 to \sim 14 h ^ { -1 } Mpc between z = 0.3 and z = 1.55 , with the corresponding bias increasing from \sim 2 to \sim 10 over the same range .
Our results are consistent with the bias prescription implemented in the SKADS simulations at low redshift , but exceed these predictions at z > 1 .
This is indicative of an increasing ( rather than fixed ) halo mass and/or AGN fraction at higher redshifts or a larger typical halo mass for the more abundant FR I sources .