NASA/IPAC EXTRAGALACTIC DATABASE
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For refcode 1998MNRAS.301..609B:
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Copyright by Royal Astronomical Society. 1998MNRAS.301..609B Cluster-subcluster mergers and the formation of narrow-angle tailed radio sources M. Bliton, E. Rizza, J. O. Burns, F. N. Owen and M. J. Ledlow Accepted 1998 May 18. Received 1998 April 15; in original form 1997 April 7 ABSTRACT We examine the ROSATPSPC X-ray properties of a sample of 15 Abell clusters containing 23 narrow-angle tailed (NAT) radio galaxies. We find that clusters with NATs show a significantly higher level of substructure than a similar sample of radio-quiet clusters, indicating that NAT radio sources are preferentially located in dynamically complex systems. Also, the velocity distribution of the NAT galaxies is similar to that of other cluster members; these velocities are inadequate for producing the ram pressure necessary to bend the radio jets. We therefore propose a new model for NAT formation, in which NATs are associated with dynamically complex clusters undergoing merger events. The U-shaped NAT morphology is produced in part by the merger-induced bulk motion of the ICM bending the jets. Key words: galaxies: active - galaxies: clusters: general - X-rays: galaxies.
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