1.3k citations · 5.8k across the 80 of their papers we have counts for
80 papers
21cm Epoch of Reionisation Power Spectrum with Closure Phase using the Murchison Widefield Array
Himanshu Tiwari, Nithyanandan Thyagarajan, Cathryn M. Trott +1
The radio interferometric closure phases can be a valuable tool for studying cosmological {H\scriptsize{I}}~from the early Universe. Closure phases have the advantage of being immu…
Measuring the global 21-cm signal with the MWA-II: improved characterisation of lunar-reflected radio frequency interference
Himanshu Tiwari, Benjamin McKinley, Cathryn M. Trott +1
Radio interferometers can potentially detect the sky-averaged signal from the Cosmic Dawn (CD) and the Epoch of Reionisation (EoR) by studying the Moon as a thermal block to the fo…
Singular spectrum analysis of time series data from low frequency radiometers, with an application to SITARA data
Jishnu N. Thekkeppattu, Cathryn M. Trott, Benjamin McKinley
Understanding the temporal characteristics of data from low frequency radio telescopes is of importance in devising suitable calibration strategies. Application of time series anal…
System design and calibration of SITARA -- a global 21 cm short spacing interferometer prototype
Jishnu N. Thekkeppattu, Benjamin McKinley, Cathryn M. Trott +2
Global 21-cm experiments require exquisitely precise calibration of the measurement systems in order to separate the weak 21-cm signal from Galactic and extragalactic foregrounds a…
Searching for the Synchrotron Cosmic Web Again: A replication attempt
Torrance Hodgson, Melanie Johnston-Hollitt, Benjamin McKinley +1
We follow up on the surprising recent announcement by Vernstrom et al. (2021) of the detection of the synchrotron cosmic web. We attempt to reproduce their detection with new obser…
Multi-scale feedback and feeding in the closest radio galaxy Centaurus A
B. McKinley, S. J. Tingay, M. Gaspari +12
Supermassive black holes and supernovae explosions at the centres of active galaxies power cycles of outflowing and inflowing gas that affect galactic evolution and the overall str…
The MWA Long Baseline Epoch of Reionisation Survey: I. Improved Source Catalogue for the EoR 0 field
C. R. Lynch, T. J. Galvin, J. L. B. Line +6
One of the principal systematic constraints on the Epoch of Reionisation (EoR) experiment is the accuracy of the foreground calibration model. Recent results have shown that highly…
The Aperture Array Verification System 1: System overview and early commissioning results
P. Benthem, R. Wayth, E. de Lera Acedo +51
The design and development process for the Square Kilometre Array (SKA) radio telescope, the Low Frequency Aperture Array component, was progressed during the SKA pre-construction…
Epoch of Reionization Power Spectrum Limits from Murchison Widefield Array Data Targeted at EoR1 Field
M. Rahimi, B. Pindor, J. L. B. Line +28
Current attempts to measure the 21cm Power Spectrum of neutral hydrogen during the Epoch of Reionization are limited by systematics which produce measured upper limits above both t…
Stacking the Synchrotron Cosmic Web with FIGARO
Torrance Hodgson, Franco Vazza, Melanie Johnston-Hollitt +1
Recently Vernstrom et al. (2021) claimed the first definitive detection of the synchrotron cosmic web, obtained by `stacking' hundreds of thousands of pairs of close-proximity clus…
Constraining the 21cm brightness temperature of the IGM at =6.6 around LAEs with the Murchison Widefield Array
Cathryn M. Trott, C. H. Jordan, J. L. B. Line +29
The locations of Ly- emitting galaxies (LAEs) at the end of the Epoch of Reionisation (EoR) are expected to correlate with regions of ionised hydrogen, traced by the redshifted…
The GLEAM 200 MHz Local Radio Luminosity Function for AGN and Star-forming Galaxies
T. M. O. Franzen, N. Seymour, E. M. Sadler +24
The GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) is a radio continuum survey at 76-227 MHz of the entire southern sky (Declination ) with an angular…
FIGARO Simulation: FIlaments & GAlactic RadiO Simulation
Torrance Hodgson, Franco Vazza, Melanie Johnston-Hollitt +1
We produce the first low to mid frequency radio simulation that incorporates both traditional extragalactic radio sources as well as synchrotron cosmic web emission. The FIlaments…
A new MWA limit on the 21 cm Power Spectrum at Redshifts 13 17
S. Yoshiura, B. Pindor, J. L. B. Line +29
Observations in the lowest MWA band between MHz have the potential to constrain the distribution of neutral hydrogen in the intergalactic medium at redshift .…
Ultra-Steep Spectrum Radio `Jellyfish' Uncovered in Abell 2877
Torrance Hodgson, Iacopo Bartalucci, Melanie Johnston-Hollitt +3
We report on the discovery of a mysterious ultra-steep spectrum (USS) synchrotron source in the galaxy cluster Abell 2877. We have observed the source with the Murchison Widefield…
The Impact of Tandem Redundant/Sky-Based Calibration in MWA Phase II Data Analysis
Zheng Zhang, Jonathan C. Pober, Wenyang Li +26
Precise instrumental calibration is of crucial importance to 21-cm cosmology experiments. The Murchison Widefield Array's (MWA) Phase II compact configuration offers us opportuniti…
The All-Sky SignAl Short-Spacing INterferometer (ASSASSIN) I: Global sky measurements with the Engineering Development Array-2
B. McKinley, C. M. Trott, M. Sokolowski +5
Aiming to fill a crucial gap in our observational knowledge of the early Universe, experiments around the world continue to attempt to verify the claimed detection of the redshifte…
Design Equations for a Closely-Spaced Two-Element Interferometer Including Internal Noise Coupling
Adrian T. Sutinjo, Benjamin McKinley, Leonid Belostotski +2
We present design equations for a two-element closely-spaced interferometer for measuring the noise temperature of a uniform sky. Such an interferometer is useful for observing hig…
Low(er) frequency follow-up of 28 candidate, large-scale synchrotron sources
Torrance Hodgson, Melanie Johnston-Hollitt, Benajmin McKinley +2
We follow up on a report by Vacca et al. (2018) of 28 candidate large-scale diffuse synchrotron sources in an 8°8° area of the sky (centred at RA 5h0m0s Dec 5°48'0''). Thes…
Modelling and peeling extended sources with shapelets: a Fornax A case study
J. L. B. Line, D. A. Mitchell, B. Pindor +6
To make a power spectrum (PS) detection of the 21 cm signal from the Epoch of Reionisation (EoR), one must avoid/subtract bright foreground sources. Sources such as Fornax A presen…
Dark matter annihilation in Centauri: Astrophysical implications derived from the MWA radio data
Arpan Kar, Biswarup Mukhopadhyaya, Steven Tingay +6
We present an analysis of Murchison Widefield Array radio telescope data from Cen, possibly a stripped dwarf spheroidal galaxy core captured by our Galaxy. Recent interpretatio…
Deep multi-redshift limits on Epoch of Reionisation 21cm Power Spectra from Four Seasons of Murchison Widefield Array Observations
Cathryn M. Trott, C. H. Jordan, S. Midgley +33
We compute the spherically-averaged power spectrum from four seasons of data obtained for the Epoch of Reionisation (EoR) project observed with the Murchison Widefield Array (MWA).…
First Season MWA Phase II EoR Power Spectrum Results at Redshift 7
W. Li, J. C. Pober, N. Barry +44
The compact configuration of Phase II of the Murchison Widefield Array (MWA) consists of both a redundant subarray and pseudo-random baselines, offering unique opportunities to per…
GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey II: Galactic Plane ,
Natasha Hurley-Walker, Paul J. Hancock, Thomas M. O. Franzen +16
This work makes available a further 2,860deg of the GLEAM survey, covering half of the accessible Galactic Plane, across twenty frequency bands sampling MHz, with resol…