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 map** 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 …