36 citations · 149 across the 13 of their papers we have counts for
14 papers
Diffuse galaxy cluster emission at 168 MHz within the Murchison Widefield Array Epoch of Reionization 0-hour field
S. W. Duchesne, M. Johnston-Hollitt, A. R. Offringa +3
We detect and characterise extended, diffuse radio emission from galaxy clusters at 168 MHz within the Epoch of Reionization 0-hour field: a region of th…
Dynamics of Abell 3266 - I. An Optical View of a Complex Merging Cluster
Siamak Dehghan, Melanie Johnston-Hollitt, Matthew Colless +1
We present spectroscopy of 880 galaxies within a 2-degree field around the massive, merging cluster Abell 3266. This sample, which includes 704 new measurements, was combined with…
An Optical Analysis of the Merging Cluster Abell 3888
S. Shakouri, M. Johnston-Hollitt, S. Dehghan
In this paper we present new AAOmega spectroscopy of 254 galaxies within a 30' radius around Abell 3888. We combine these data with the existing redshifts measured in a one degree…
An Overview of the SKA Science Analysis Pipeline
C. Hollitt, M. Johnston-Hollitt, S. Dehghan +2
When completed the Square Kilometre Array (SKA) will feature an unprecedented rate of image generation. While previous generations of telescopes have relied on human expertise to e…
Point Source Detection Software in the SKA Era
Siamak Dehghan, Melanie Johnston-Hollitt, Christopher Hollitt
The generation of a sky model for calibration of Square Kilometre Array observations requires a fast method of automatic point source detection and characterisation. In recent year…
Using SKA Rotation Measures to Reveal the Mysteries of the Magnetised Universe
Melanie Johnston-Hollitt, Federica Govoni, Rainer Beck +21
We know that magnetic fields are pervasive across all scales in the Universe and over all of cosmic time and yet our understanding of many of the properties of magnetic fields is s…
Tailed Radio Galaxies as Probes of Cluster Physics in the Square Kilometre Array Era
S. Dehghan, M. Johnston-Hollitt
In recent years, the use of tailed radio galaxies as environmental probes has gained momentum as a method for galaxy cluster detection, examining the dynamics of individual cluster…
Using Tailed Radio Galaxies to Probe the Environment and Magnetic Field of Galaxy Clusters in the SKA Era
M. Johnston-Hollitt, S. Dehghan, L. Pratley
The morphology of tailed radio galaxies is an invaluable source of environmental information, in which a history of the past interactions in the intra-cluster medium, such as compl…
Using radio jets of PKS J0334-3900 to probe the intra-cluster medium in A3135
L. Pratley, M. Johnston-Hollitt, S. Dehghan +1
We present a multi-wavelength study of the radio galaxy PKS J0334-3900, which resides at the centre of Abell 3135. Using Australia Telescope Compact Array (ATCA) observations at 1.…
Using the morphology and magnetic fields of tailed radio galaxies as environmental probes
M. Johnston-Hollitt, S. Dehghan, L. Pratley
Bent-tailed (BT) radio sources have long been known to trace over densities in the Universe up to z ~ 1 and there is increasing evidence this association persists out to redshifts…
Non-thermal emission from galaxy clusters: feasibility study with SKA1
Chiara Ferrari, Arwa Dabbech, Oleg Smirnov +20
Galaxy clusters are known to host a variety of extended radio sources: tailed radio galaxies whose shape is modelled by the interaction with the intra-cluster medium (ICM); radio b…
Bent-Tailed Radio Sources in the Australia Telescope Large Area Survey of the Chandra Deep Field-South
Siamak Dehghan, Melanie Johnston-Hollitt, Thomas M. O. Franzen +2
Using the 1.4 GHz Australia Telescope Large Area Survey (ATLAS), supplemented with the 1.4 GHz Very Large Array images, we undertook a search for bent-tailed (BT) radio galaxies in…
Clusters, Groups, and Filaments in the Chandra Deep Field-South up to Redshift 1
Siamak Dehghan, Melanie Johnston-Hollitt
We present a comprehensive structure detection analysis of the 0.3 square degree area of the MUSYC-ACES field which covers the Chandra Deep Field-South (CDFS). Using a density-base…
Using head-tail galaxies to constrain the intracluster magnetic field: an in-depth study of PKS J0334-3900
Luke Pratley, Melanie Johnston-Hollitt, Siamak Dehghan +1
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 opti…