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Using 57 Radio Active Galactic nuclei (RAGN) at 0.55 $\leq$ z $\leq$ 1.3drawn from five fields of the Observations of Redshift Evolution in Large ScaleEnvironments (ORELSE) survey, we study the effect of injection of energy fromoutbursts of RAGN on their spectroscopically-confirmed neighboring galaxies(SNGs). We observe an elevated fraction of quenched neighbors (fq) within 500kpc projected radius of RAGN in the most dense local environments compared tothose of non-RAGN control samples matched to the RAGN population in colour,stellar mass, and local environment at 2$\sigma$ significance. Further analysesshow that there are offsets at similar significance between fqs of RAGN-SNGsand the appropriate control samples for galaxies specifically in clusterenvironments and those hosted by most massive cluster galaxies, whichtentatively suggests that some negative feedback from the RAGN is occurring inthese dense environments. In addition, we find that the median radio power ofRAGN increases with increasing local overdensity, an effect which may lenditself to the quenching of neighboring galaxies. Furthermore, we find that, inthe highest local overdensities, the fq of the sub-sample of lower stellar massRAGN-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 massgalaxies. We propose a scenario in which RAGN residing within clusters mightheat the intracluster medium (ICM) affecting both in situ star formation andany inflowing gas that remains in their neighboring galaxies.

Possible Evidence of the Radio AGN Quenching of Neighboring Galaxies at z $\sim$ 1