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In order to study the ram-pressure interaction between radio galaxies and the intracluster medium, we analyse a sample of 208 highly-bent narrow-angle tail radio sources (NATs) in clusters, detected by the LOFAR Two-metre Sky Survey. For…

Astrophysics of Galaxies · Physics 2021-07-14 K de Vos , N. A. Hatch , M. R. Merrifield , B. Mingo

Bent radio AGN morphology depends on the density of the surrounding gas. However, bent sources are found inside and outside clusters, raising the question of how environment impacts bent AGN morphology. We analyze new LOw-Frequency Array…

Using radio sources from the Faint Images of the Radio Sky at Twenty-cm (FIRST) survey, and optical counterparts in the Sloan Digital Sky Survey (SDSS), we have identified a large number of galaxy clusters. The radio sources within these…

Cosmology and Nongalactic Astrophysics · Physics 2013-05-03 Joshua D. Wing , Elizabeth L. Blanton

We present a multi-wavelength study of the radio galaxy PKS J0334-3900 at the centre of Abell 3135. The spectro-polarimetric radio observations are combined with spectroscopic optical and X-ray data to illustrate the use of Head-Tail radio…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Luke Pratley , Melanie Johnston-Hollitt , Siamak Dehghan , Ming Sun

Using the Sloan Digital Sky Survey (SDSS) and the FIRST (Faint Images of the Radio Sky at Twenty Centimeters) catalogs, we examined the optical environments around double-lobed radio sources. Previous studies have shown that multi-component…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Joshua D. Wing , Elizabeth L. Blanton

We have examined the ROSAT PSPC 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…

Astrophysics · Physics 2009-10-31 M. Bliton , E. Rizza , J. O. Burns , F. N. Owen , M. J. Ledlow

To investigate the origins of wide-angle tailed radio sources (WATs), we have compiled a sample of these systems in Abell clusters for which X-ray data exist. Contrary to conventional wisdom, the WATs are found to be significantly displaced…

Astrophysics · Physics 2009-10-31 Irini Sakelliou , Michael R. Merrifield

We examine the remnant phase of radio galaxies using three-dimensional hydrodynamical simulations of relativistic jets propagating through cluster environments. By switching the jets off once the lobes have reached a certain length we can…

High Energy Astrophysical Phenomena · Physics 2020-01-08 W. English , M. J. Hardcastle , M. G. H. Krause

Using radio data at 1.4 GHz from the ATCA we identify five head-tail (HT) galaxies in the central region of the Horologium-Reticulum Supercluster (HRS). Physical parameters of the HT galaxies were determined along with substructure in the…

Using a high-performance computing cluster to mosaic 4,787 pointings, we have imaged the 100 sq. deg. South Pole Telescope (SPT) deep-field at 2.1 GHz using the Australian Telescope Compact Array to an rms of 80 $\mu$Jy and a resolution of…

Astrophysics of Galaxies · Physics 2016-02-08 A. N. O'Brien , N. F. H. Tothill , R. P. Norris , M. D. Filipović

Extragalactic jets exhibit a wide range of propagation orientations relative to the host galaxy's principal axis. This study investigate the spatiotemporal evolution of jets as a function of their propagation direction within their triaxial…

Aims. Narrow-angle tailed (NAT) sources in clusters of galaxies can show on the large scale very narrow tails that are unresolved even at arcsecond resolution. These sources could therefore be classified as one-sided jets. The aim of this…

We present results from two suites of simulations of powerful radio galaxies in poor cluster environments, with a focus on the formation and evolution of the radio lobes. One suite of models uses relativistic hydrodynamics and the other…

High Energy Astrophysical Phenomena · Physics 2016-06-13 William English , Martin J. Hardcastle , Martin G. H. Krause

The bending of radio galaxies in galaxy clusters is expected to be caused by interactions with the local environment. The physical processes responsible for jet bending, and their influence on the polarization properties of radio galaxies,…

Astrophysics of Galaxies · Physics 2026-01-16 S. Vanderwoude , E. Osinga , B. M. Gaensler , J. L. West , R. J. van Weeren

We present a statistical analysis of the large-scale (up to 2 Mpc) environment of an homogeneous and complete sample, both in radio and optical selection, of wide-angle tailed radio galaxies (WATs) in the local Universe (i.e., with…

Cosmology and Nongalactic Astrophysics · Physics 2023-06-21 V. Missaglia , A. Paggi , F. Massaro , A. Capetti , R. D. Baldi , R. P. Kraft , M. Paolillo , A. Tramacere , R. Campana , I. Pillitteri

Diffuse radio emission from galaxy clusters in the form of radio halos and relics are tracers of the shocks and turbulence in the intra-cluster medium. The imprints of the physical processes that govern their origin and evolution can be…

Cosmology and Nongalactic Astrophysics · Physics 2020-04-08 Ruta Kale

The tailed radio galaxies that have been called ``Type I'' are not a uniform set. To study their dynamics, we have used the Ledlow-Owen data set, which provides a new sample of 250 radio galaxies in nearby Abell clusters. These sources…

Astrophysics · Physics 2009-10-31 J. Eilek , P. Hardee , T. Markovic , M. Ledlow , F. Owen

The number of observed giant radio sources (GRSs) has increased significantly in recent years, yet their formation mechanisms remain elusive. The discovery of giant radio galaxies within galaxy clusters has further intensified the ongoing…

Astrophysics of Galaxies · Physics 2025-05-14 Xiaodong Duan , Linhui Wu , Ruiyu Zhang , Jiawen Li

In order to study the status and the possible evolution of clusters of galaxies at intermediate redshifts (z ~ 0.1 - 0.3), as well as their spatial correlation and relationship with the local environment, we built a sample of candidate…

Astrophysics · Physics 2009-11-07 A. Zanichelli , M. Vigotti , R. Scaramella , G. Grueff , G. Vettolani

The study of high-$z$ radio galaxies (HZRGs) has matured considerably during the last decade. Large numbers of $z>2$ radio galaxies have been found and have been studied in considerable detail. In this review we will address the importance…

Astrophysics · Physics 2007-05-23 H. J. A. Röttgering , G. K. Miley