Galaxy and Mass Assembly (GAMA): The evolution of bias in the radio
  source population to z ~ 1.5
  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 S1.4 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 r0 ~ 8.2 Mpc/h and linear bias of ~1.9 at z ~
0.34. Furthermore, we use the angular two-point correlation function
w({\theta}) to determine spatial clustering properties at higher redshifts. We
find r0 to increase from ~6 to ~14 Mpc/h between z = 0.3 and z = 1.55, with the
corresponding bias increasing from ~2 to ~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 FRI sources.
