161 citations · 1.2k across the 32 of their papers we have counts for
31 papers
Early Science from POSSUM: Shocks, turbulence, and a massive new reservoir of ionised gas in the Fornax cluster
C. S. Anderson, G. H. Heald, J. A. Eilek +19
We present the first Faraday rotation measure (RM) grid study of an individual low-mass cluster -- the Fornax cluster -- which is presently undergoing a series of mergers. Exploiti…
The Karl G. Jansky Very Large Array Sky Survey (VLASS). Science case and survey design
M. Lacy, S. A. Baum, C. J. Chandler +75
The Very Large Array Sky Survey (VLASS) is a synoptic, all-sky radio sky survey with a unique combination of high angular resolution (2.5"), sensitivity (a 1 goal of 70…
Diffuse polarized emission in the LOFAR Two-meter Sky Survey
C. L. Van Eck, M. Haverkorn, M. I. R. Alves +13
Faraday tomography allows us to map diffuse polarized synchrotron emission from our Galaxy and use it to interpret the magnetic field in the interstellar medium (ISM). We have appl…
The extraordinary linear polarisation structure of the southern Centaurus A lobe revealed by ASKAP
Craig S. Anderson, George Heald, Shane P. O'Sullivan +14
We present observations of linear polarisation in the southern radio lobe of Centaurus A, conducted during commissioning of the Australian Square Kilometre Array Pathfinder (ASKAP)…
Science Pipelines for the Square Kilometre Array
Jamie Farnes, Ben Mort, Fred Dulwich +2
The Square Kilometre Array (SKA) will be both the largest radio telescope ever constructed and the largest Big Data project in the known Universe. The first phase of the project wi…
LOFAR MSSS: Flattening low-frequency radio continuum spectra of nearby galaxies
K. T. Chyży, W. Jurusik, J. Piotrowska +35
The shape of low-frequency radio continuum spectra of normal galaxies is not well understood, the key question being the role of physical processes such as thermal absorption in sh…
Reliable detection and characterization of low-frequency polarized sources in the LOFAR M51 field
A. Neld, C. Horellou, D. D. Mulcahy +14
The new generation of broad-band radio continuum surveys will provide large data sets with polarization information. New algorithms need to be developed to extract reliable catalog…
LOFAR discovery of radio emission in MACSJ0717.53745
A. Bonafede, M. Brüggen, D. Rafferty +16
We present results from LOFAR and GMRT observations of the galaxy cluster MACSJ0717.53745. The cluster is undergoing a violent merger involving at least four sub-clusters, a…
Magnetic Field Analysis of the Bow and Terminal Shock of the SS433 Jet
Haruka Sakemi, Mami Machida, Takuya Akahori +4
We report a polarization analysis of the eastern region of W50, observed with the Australia Telescope Compact Array (ATCA) at 1.4 - 3.0 GHz. In order to study the physical structur…
Polarized point sources in the LOFAR Two-meter Sky Survey: A preliminary catalog
C. L. Van Eck, M. Haverkorn, M. I. R. Alves +22
The polarization properties of radio sources at very low frequencies (<200 MHz) have not been widely measured, but the new generation of low-frequency radio telescopes, including t…
Revealing HI gas in emission and absorption on pc to kpc scales in a galaxy at z ~ 0.017
N. Gupta, R. Srianand, J. S. Farnes +6
We present a detailed study of the quasar-galaxy pair: J1243+4043 - UGC07904. The sight line of the background quasar ( = 1.5266) passes through a region of the galaxy (=…
Radio Polarization Properties of Quasars and Active Galaxies at High Redshifts
Tessa Vernstrom, Bryan Gaensler, Valentina Vacca +3
We present the largest ever sample of radio polarization properties for sources, with 14 sources having significant polarization detections. Using wideband data from the Karl…
A Unifying Theory of Dark Energy and Dark Matter: Negative Masses and Matter Creation within a Modified CDM Framework
J. S. Farnes
Dark energy and dark matter constitute 95% of the observable Universe. Yet the physical nature of these two phenomena remains a mystery. Einstein suggested a long-forgotten solutio…
Source Finding in Linear Polarization for LOFAR, and SKA Predecessor Surveys, using Faraday Moments
J. S. Farnes, G. Heald, H. Junklewitz +10
The optimal source-finding strategy for linear polarization data is an unsolved problem, with many inhibitive factors imposed by the technically-challenging nature of polarization…
The challenges of low-frequency radio polarimetry: lessons from the Murchison Widefield Array
Emil Lenc, C. S. Anderson, N. Barry +26
We present techniques developed to calibrate and correct Murchison Widefield Array (MWA) low frequency (72-300 MHz) radio observations for polarimetry. The extremely wide field-of-…
A polarized fast radio burst at low Galactic latitude
E. Petroff, S. Burke-Spolaor, E. F. Keane +35
We report on the discovery of a new fast radio burst, FRB 150215, with the Parkes radio telescope on 2015 February 15. The burst was detected in real time with a dispersion measure…
Broadband, radio spectro-polarimetric study of 100 radiative-mode and jet-mode AGN
S. P. O'Sullivan, C. R. Purcell, C. S. Anderson +3
We present the results from a broadband (1 to 3 GHz), spectro-polarimetry study of the integrated emission from 100 extragalactic radio sources with the ATCA, selected to be highly…
LOFAR MSSS: Discovery of a 2.56 Mpc giant radio galaxy associated with a disturbed galaxy group
A. O. Clarke, G. Heald, T. Jarrett +40
We report on the discovery in the LOFAR Multifrequency Snapshot Sky Survey (MSSS) of a giant radio galaxy (GRG) with a projected size of Mpc projected on the sky. I…
Faraday tomography of the local interstellar medium with LOFAR: Galactic foregrounds towards IC342
C. L. Van Eck, M. Haverkorn, M. I. R. Alves +18
The new generation of low-frequency radio telescopes, such as the Low Frequency Array (LOFAR: a Square Kilometre Array-low pathfinder), provides advancements in our capability of p…
Observed Faraday Effects in Damped Lyman-Alpha Absorbers and Lyman Limit Systems: The Magnetised Environment of Galactic Building Blocks at Redshift=2
J. S. Farnes, L. Rudnick, B. M. Gaensler +3
Protogalactic environments are typically identified using quasar absorption lines, and these galactic building blocks can manifest as Damped Lyman-Alpha Absorbers (DLAs) and Lyman…
Magnetic field disorder and Faraday effects on the polarization of extragalactic radio sources
Mehdi Lamee, Lawrence Rudnick, Jamie S. Farnes +4
We present a polarization catalog of 533 extragalactic radio sources with 2.3 GHz total intensity above 420 mJy from the S-band Polarization All Sky Survey, S-PASS, with correspond…
Interacting Large-Scale Magnetic Fields and Ionised Gas in the W50/SS433 System
J. S. Farnes, B. M. Gaensler, C. Purcell +5
The W50/SS433 system is an unusual Galactic outflow-driven object of debatable origin. We have used the Australia Telescope Compact Array (ATCA) to observe a new 198 pointing mosai…
The Magnetic Field and Polarization Properties of Radio Galaxies in Different Accretion States
Shane P. O'Sullivan, B. M. Gaensler, M. A. Lara-López +3
We use the integrated polarized radio emission at 1.4 GHz () from a large sample of AGN (796 sources at redshifts ) to study the large-scale magnetic field…
Broadband Polarimetry with the Square Kilometre Array: A Unique Astrophysical Probe
B. M. Gaensler, Iván Agudo, Takuya Akahori +15
Faraday rotation of polarised background sources is a unique probe of astrophysical magnetic fields in a diverse range of foreground objects. However, to understand the properties…