69 citations · 325 across the 25 of their papers we have counts for
27 papers
The LOFAR Decametre Sky Survey (LoDeSS) I. Survey description and first data release
C. M. Cordun, C. Groeneveld, H. W. Edler +12
The decametre radio sky (- MHz) remains largely unexplored due to strong ionospheric distortions and severe radio-frequency interference. Despite its scientific potent…
Investigating the magnetic field in the inter-cluster filament between Abell 3667 and Abell 3651 with POSSUM
C. Stuardi, S. P. O'Sullivan, L. Rudnick +19
[Abridged abstract] The objective of this study is to measure the magnetic field within the prominent inter-cluster filament recently detected in X-rays by the extended ROentgen Su…
The Rapid ASKAP Continuum Survey VII: Spectra and Polarisation In Cutouts of Extragalactic Sources (SPICE-RACS) Second Data Release -- Unveiling the Magnetised Sky
Alec J. M. Thomson, Timothy J. Galvin, Stefan W. Duchesne +18
We present the second data release (DR2) of Spectra and Polarisation in Cutouts of Extragalactic sources from RACS (SPICE-RACS). SPICE-RACS DR2 is derived from the third low-band e…
RM-Tools: Software for Analyzing Polarized Radio Spectra
Cameron L. Van Eck, Cormac R. Purcell, Lerato Baidoo +19
Polarization observations using modern radio telescopes cover large numbers of frequency channels over broad bandwidths, and require advanced techniques to extract reliable scienti…
MeerKAT observations of Abell 1775 and Abell 1795: the discovery of a hadronic radio halo?
R. J. van Weeren, E. Osinga, G. Brunetti +13
Giant radio haloes are diffuse synchrotron sources typically found in merging galaxy clusters, while smaller mini-haloes occur in cool-core clusters. Both trace cosmic-ray electron…
Testing the correlation between bending angle and polarization properties of bent radio galaxies
S. Vanderwoude, E. Osinga, B. M. Gaensler +2
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…
Revealing the magnetization of the intracluster medium of Abell 3581 using background Faraday rotation measures from the POSSUM survey
Affan Khadir, Erik Osinga, Wonki Lee +16
The line-of-sight magnetic field of galaxy clusters can be probed using Faraday rotation measure (RM) data. However, our understanding of cluster magnetism is limited due to the sc…
Magnetic Fields in the Shapley Supercluster Core with POSSUM: Challenging Model Predictions
D. Alonso-López, S. P. O'Sullivan, A. Bonafede +18
Faraday Rotation Measure (RM) Grids provide a sensitive means to trace magnetized plasma across a wide range of cosmic environments. We study the RM signal from the Shapley Supercl…
Discovery of Diffuse Radio Emission in a Massive z=1.709 Cool Core Cluster: A Candidate Radio Mini-Halo
Julie Hlavacek-Larrondo, Roland Timmerman, Christoph Pfrommer +10
Clusters of galaxies host spectacular diffuse radio sources, extending over scales from 100 kpc to several Mpcs. These sources, with extremely faint surface brightness (Jy/arcse…
The phase-space of tailed radio galaxies in massive clusters
Stefan van der Jagt, Erik Osinga, Reinout J. van Weeren +4
The radio jets of radio galaxies in galaxy clusters are often bent due to the ram pressure of the intracluster medium. In this paper we start with a well-defined sample of galaxy c…
The Polarisation Sky Survey of the Universe's Magnetism (POSSUM): Science Goals and Survey Description
B. M. Gaensler, G. H. Heald, N. M. McClure-Griffiths +57
The Australian SKA Pathfinder (ASKAP) offers powerful new capabilities for studying the polarised and magnetised Universe at radio wavelengths. In this paper, we introduce the Pola…
Serendipitous decametre detection of ultra steep spectrum radio emission in Abell 655
C. Groeneveld, R. J. van Weeren, A. Botteon +5
Some galaxy clusters contain non-thermal synchrotron emitting plasma permeating the intracluster medium (ICM). The spectral properties of this radio emission are not well character…
Probing cluster magnetism with embedded and background radio sources in Planck clusters
Erik Osinga, Reinout J. van Weeren, Lawrence Rudnick +6
Magnetic fields remain an enigmatic part of the content of galaxy clusters. Faraday rotation and depolarisation of extragalactic radio sources are useful probes, but the limited av…
Probing the Magnetised Gas Distribution in Galaxy Groups and the Cosmic Web with POSSUM Faraday Rotation Measures
Craig S. Anderson, N. M. McClure-Griffiths, L. Rudnick +21
We present initial results from the Polarisation Sky Survey of the Universe's Magnetism (POSSUM), analysing 22,817 Faraday Rotation Measures (RMs) with median uncertainties of 1.2…
Probing particle acceleration in Abell 2256: from to 16 MHz to gamma rays
E. Osinga, R. J. van Weeren, G. Brunetti +9
Merging galaxy clusters often host spectacular diffuse radio synchrotron sources. These sources can be explained by a non-thermal pool of relativistic electrons accelerated by shoc…
Characterization of the decametre sky at subarcminute resolution
C. Groeneveld, R. J. van Weeren, E. Osinga +11
The largely unexplored decameter radio band (10-30 MHz) provides a unique window for studying a range of astronomical topics, such as auroral emission from exoplanets, inefficient…
The LOFAR Two-Metre Sky Survey (LoTSS): VI. Optical identifications for the second data release
M. J. Hardcastle, M. A. Horton, W. L. Williams +49
The second data release of the LOFAR Two-Metre Sky Survey (LoTSS) covers 27% of the northern sky, with a total area of deg. The high angular resolution of LOFAR wi…
A MeerKAT-meets-LOFAR study of Abell 1413: a moderately disturbed non-cool-core cluster hosting a kpc 'mini'-halo
C. J. Riseley, N. Biava, G. Lusetti +12
Many relaxed cool-core clusters host diffuse radio emission on scales of hundreds of kiloparsecs: mini-haloes. However, the mechanism responsible for generating them, as well as th…
Revisiting the alignment of radio galaxies in the ELAIS-N1 field
Marco Simonte, Heinz Andernach, Marcus Brueggen +2
Aims. Previous studies reported an alignment of the major axes of radio galaxies on various angular scales. Here, we study the alignment of radio galaxies in the ELAIS-N1 Low Frequ…
Deep low-frequency radio observations of Abell 2256 II: The ultra-steep spectrum radio halo
K. Rajpurohit, E. Osinga, M. Brienza +17
We present the first detailed analysis of the radio halo in the merging galaxy cluster Abell 2256 using the LOFAR, uGMRT, and VLA. These observations combined with archival X-ray d…
The detection of cluster magnetic fields via radio source depolarisation
E. Osinga, R. J. van Weeren, F. Andrade-Santos +7
It has been well established that galaxy clusters have magnetic fields. The exact properties and origin of these magnetic fields are still uncertain even though these fields play a…
Deep low-frequency radio observations of Abell 2256 I: The filamentary radio relic
K. Rajpurohit, R. J. van Weeren, M. Hoeft +22
We present deep and high fidelity images of the merging galaxy cluster Abell 2256 at low frequencies, using the upgraded Giant Metrewave Radio Telescope (uGMRT) and LOw-Frequency A…
A LOFAR-uGMRT spectral index study of distant radio halos
G. Di Gennaro, R. J. van Weeren, R. Cassano +9
Context. Radio halos are megaparsec-scale diffuse radio sources{ mostly} located at the centres of merging galaxy clusters. The common mechanism invoked to explain their origin is…
Diffuse Radio Emission from Galaxy Clusters in the LOFAR Two-metre Sky Survey Deep Fields
E. Osinga, R. J. van Weeren, J. Boxelaar +15
Low-frequency radio observations are revealing an increasing number of diffuse synchrotron sources from galaxy clusters, dominantly in the form of radio halos or radio relics. The…