The radio sky at meter wavelengths: m-Mode analysis imaging with the OVRO-LWA

MW Eastwood, MM Anderson, RM Monroe… - The Astronomical …, 2018 - iopscience.iop.org
A host of new low-frequency radio telescopes seek to measure the 21 cm transition of
neutral hydrogen from the early universe. These telescopes have the potential to directly …

The Faraday Rotation Measure Grid of the LOFAR Two-metre Sky Survey: Data Release 2

SP O'Sullivan, TW Shimwell… - Monthly Notices of …, 2023 - academic.oup.com
ABSTRACT A Faraday rotation measure (RM) catalogue, or RM Grid, is a valuable resource
for the study of cosmic magnetism. Using the second data release (DR2) from the LOFAR …

Calibration and stokes imaging with full embedded element primary beam model for the murchison widefield array

M Sokolowski, T Colegate, AT Sutinjo… - Publications of the …, 2017 - cambridge.org
The Murchison Widefield Array (MWA), located in Western Australia, is one of the low-
frequency precursors of the international Square Kilometre Array (SKA) project. In addition to …

The impact of modelling errors on interferometer calibration for 21 cm power spectra

A Ewall-Wice, JS Dillon, A Liu… - Monthly Notices of the …, 2017 - academic.oup.com
We study the impact of sky-based calibration errors from source mismodelling on 21 cm
power spectrum measurements with an interferometer and propose a method for …

An all-sky survey of circular polarization at 200 MHz

E Lenc, T Murphy, CR Lynch, DL Kaplan… - Monthly Notices of the …, 2018 - academic.oup.com
We present results from the first all-sky radio survey in circular polarization. The survey uses
the Murchison Widefield Array (MWA) to cover 30 900 sq deg, over declinations south of+ …

Structure in the magnetic field of the milky way disk and halo traced by faraday rotation

JM Dickey, J West, AJM Thomson… - The Astrophysical …, 2022 - iopscience.iop.org
Magnetic fields in the ionized medium of the disk and halo of the Milky Way impose Faraday
rotation on linearly polarized radio emission. We compare two surveys mapping the Galactic …

On the contamination of the global 21-cm signal from polarized foregrounds

M Spinelli, G Bernardi, MG Santos - Monthly Notices of the Royal …, 2019 - academic.oup.com
ABSTRACT Global (ie sky-averaged) 21-cm signal experiments can measure the evolution
of the Universe from the cosmic dawn to the epoch of reionization (EoR). These …

The intergalactic magnetic field probed by a giant radio galaxy

SP O'Sullivan, J Machalski, CL Van Eck… - Astronomy & …, 2019 - aanda.org
Cosmological simulations predict that an intergalactic magnetic field (IGMF) pervades the
large scale structure (LSS) of the Universe. Measuring the IGMF is important to determine its …

Faraday tomography of the local interstellar medium with LOFAR: Galactic foregrounds towards IC 342

CL Van Eck, M Haverkorn, MIR Alves, R Beck… - Astronomy & …, 2017 - aanda.org
Magnetic fields pervade the interstellar medium (ISM), but are difficult to detect and
characterize. The new generation of low-frequency radio telescopes, such as the Low …

The challenges of low-frequency radio polarimetry: Lessons from the Murchison Widefield Array

E Lenc, CS Anderson, N Barry, JD Bowman… - Publications of the …, 2017 - cambridge.org
We present techniques developed to calibrate and correct Murchison Widefield Array low-
frequency (72–300 MHz) radio observations for polarimetry. The extremely wide field-of …