Possible Evidence of the Radio AGN Quenching of Neighboring Galaxies at
  z $\sim$ 1
  Using 57 Radio Active Galactic nuclei (RAGN) at 0.55 $\leq$ z $\leq$ 1.3
drawn from five fields of the Observations of Redshift Evolution in Large Scale
Environments (ORELSE) survey, we study the effect of injection of energy from
outbursts of RAGN on their spectroscopically-confirmed neighboring galaxies
(SNGs). We observe an elevated fraction of quenched neighbors (fq) within 500
kpc projected radius of RAGN in the most dense local environments compared to
those of non-RAGN control samples matched to the RAGN population in colour,
stellar mass, and local environment at 2$\sigma$ significance. Further analyses
show that there are offsets at similar significance between fqs of RAGN-SNGs
and the appropriate control samples for galaxies specifically in cluster
environments and those hosted by most massive cluster galaxies, which
tentatively suggests that some negative feedback from the RAGN is occurring in
these dense environments. In addition, we find that the median radio power of
RAGN increases with increasing local overdensity, an effect which may lend
itself to the quenching of neighboring galaxies. Furthermore, we find that, in
the highest local overdensities, the fq of the sub-sample of lower stellar mass
RAGN-SNGs is larger than that of the higher stellar mass RAGN-SNGs sub-sample,
which indicates a more pronounced effect from RAGN on lower stellar mass
galaxies. We propose a scenario in which RAGN residing within clusters might
heat the intracluster medium (ICM) affecting both in situ star formation and
any inflowing gas that remains in their neighboring galaxies.
