A binary system of tailed radio galaxies

Abstract

We present a detailed study of a binary system of tailed radio galaxies which, along with 3C75, is the only such binary known to exist. The binary is located in a region of low galaxy density at the periphery of a poor cluster Abell S345, but lies close to the massive Horologium Reticulum supercluster. The radio sources have bent tail morphologies and show considerable meandering and wiggling along the jets, which are collimated throughout their lengths. This work presents observations of the large-scale-structure environment of the binary tailed radio sources with a view to examining the influence of large-scale flows on the morphology and dynamics of the associated radio tails. We argue that the orbital motions of the host galaxies together with tidal accelerations toward the supercluster have resulted in the complex structure seen in these radio tails.

10 pages, 9 figures, accepted for publication in MNRAS

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• Intracluster medium of the merging cluster Abell 3395
• Identifying dynamically young galaxy groups via wide-angle tail galaxies: A case study in the COSMOS field at z=0.53
• Discovery of the disturbed radio morphology in the interacting binary quasar FIRST J164311.3+315618
• A cluster pair : A3532 and A3530
• A new catalogue of head-tail radio galaxies from LoTSS DR1
• Clusters of galaxies and the cosmic web with SKA
• The Phoenix Deep Survey: Extremely Red Galaxies and Cluster Candidates