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In this paper we analyze the peculiar radio structure observed across thecentral region of the galaxy cluster Abell 585 (z=0.12). In the low-resolutionradio maps, this structure appears uniform and diffuse on angular scales of ~3arcmin, and is seemingly related to the distant (z=2.5) radio quasar B30727+409 rather than to the cluster itself. However, after a carefulinvestigation of the unpublished archival radio data with better angularresolution, we resolve the structure into two distinct arcmin-scale features,which resemble typical lobes of cluster radio galaxies with no obviousconnection to the background quasar. We support this conclusion by examiningthe spectral and polarization properties of the features, demonstrating inaddition that the analyzed structure can hardly be associated with any sort ofa radio mini-halo or relics of the cluster. Yet at the same time we are notable to identify host galaxies of the radio lobes in the available optical andinfrared surveys. We consider some speculative explanations for our findings,including gravitational wave recoil kicks of SMBHs responsible for the lobes'formation in the process of merging massive ellipticals within the centralparts of a rich cluster environment, but we do not reach any robust conclusionsregarding the origin of the detected radio features.

Peculiar Radio Structures in the Central Regions of Galaxy Cluster Abell 585