Data analysis for precision 21 cm cosmology

A Liu, JR Shaw - Publications of the Astronomical Society of the …, 2020 - iopscience.iop.org
The redshifted 21 cm line is an emerging tool in cosmology, in principle permitting three-
dimensional surveys of our universe that reach unprecedentedly large volumes, previously …

A long-period radio transient active for three decades

N Hurley-Walker, N Rea, SJ McSweeney, BW Meyers… - Nature, 2023 - nature.com
Several long-period radio transients have recently been discovered, with strongly polarized
coherent radio pulses appearing on timescales between tens to thousands of seconds,. In …

Australian square kilometre array pathfinder: I. system description

AW Hotan, JD Bunton, AP Chippendale… - Publications of the …, 2021 - cambridge.org
In this paper, we describe the system design and capabilities of the Australian Square
Kilometre Array Pathfinder (ASKAP) radio telescope at the conclusion of its construction …

A radio transient with unusually slow periodic emission

N Hurley-Walker, X Zhang, A Bahramian… - Nature, 2022 - nature.com
The high-frequency radio sky is bursting with synchrotron transients from massive stellar
explosions and accretion events, but the low-frequency radio sky has, so far, been quiet …

New Insights from Imaging Spectroscopy of Solar Radio Emission

DE Gary - Annual Review of Astronomy and Astrophysics, 2023 - annualreviews.org
Newly available high-resolution imaging of solar radio emission at many closely spaced
frequencies and times provides new physical insight into the processes, structure, and …

Deep multiredshift limits on Epoch of Reionization 21 cm power spectra from four seasons of Murchison Widefield Array observations

CM Trott, CH Jordan, S Midgley, N Barry… - Monthly Notices of …, 2020 - academic.oup.com
We compute the spherically averaged power spectrum from four seasons of data obtained
for the Epoch of Reionization (EoR) project observed with the Murchison Widefield Array …

Improving the epoch of reionization power spectrum results from Murchison Widefield Array season 1 observations

N Barry, M Wilensky, CM Trott, B Pindor… - The Astrophysical …, 2019 - iopscience.iop.org
Measurements of 21 cm Epoch of Reionization (EoR) structure are subject to systematics
originating from both the analysis and the observation conditions. Using 2013 data from the …

Radio fossils, relics, and haloes in Abell 3266: cluster archaeology with ASKAP-EMU and the ATCA

CJ Riseley, E Bonnassieux, T Vernstrom… - Monthly Notices of …, 2022 - academic.oup.com
Abell 3266 is a massive and complex merging galaxy cluster that exhibits significant
substructure. We present new, highly sensitive radio continuum observations of Abell 3266 …

Constraining the state of the intergalactic medium during the Epoch of Reionization using MWA 21-cm signal observations

R Ghara, SK Giri, B Ciardi, G Mellema… - Monthly Notices of the …, 2021 - academic.oup.com
ABSTRACT The Murchison Widefield Array (MWA) team has derived new upper limits on the
spherically averaged power spectrum of the 21-cm signal at six redshifts in the range z≈ 6.5 …

GaLactic and Extragalactic All-sky Murchison Widefield Array survey eXtended (GLEAM-X) I: Survey description and initial data release

N Hurley-Walker, TJ Galvin, SW Duchesne… - Publications of the …, 2022 - cambridge.org
We describe a new low-frequency wideband radio survey of the southern sky. Observations
covering 72–231 MHz and Declinations south of have been performed with the Murchison …