118 citations · 349 across the 14 of their papers we have counts for
13 papers
First results of sub-arcsecond scale objects identified with ASKAP using interplanetary scintillation
R. Chhetri, J. S. Morgan, R. D. Ekers +4
We present a catalogue of 131 compact sources detected at 823 MHz via their Interplanetary Scintillation (IPS). These measurements were made with the ASKA…
Relevance of Murchison Widefield Array Interplanetary Scintillation Observations to Heliospheric Transient Catalogues
A. Waszewski, J. S. Morgan, M. C. M. Cheung +6
We have conducted a comprehensive comparison of interplanetary scintillation (IPS) observations taken by the Murchison Widefield Array (MWA) with several heliospheric transient eve…
Latitudinal dependence of the solar wind during periods of high and low activity through interplanetary scintillation
A. Waszewski, J. S. Morgan, R. Ekers +5
We present a study of the solar wind over different periods of the solar cycle, specifically focussing on the minimum between solar cycles 24 and 25, and the active, ascending phas…
Unusual intra-burst variations of polarization states in FRB 20210912A and FRB 20230708A : Effects of plasma birefringence?
Apurba Bera, Clancy W. James, Mark M. McKinnon +6
Fast radio bursts (FRBs) are highly energetic events of short-duration intense radio emission, the origin of which remains elusive till date. Polarization of the FRB signals carry…
The Curious Case of Twin Fast Radio Bursts: Evidence for Neutron Star Origin?
Apurba Bera, Clancy W. James, Adam T. Deller +9
Fast radio bursts (FRBs) are brilliant short-duration flashes of radio emission originating at cosmological distances. The vast diversity in the properties of currently known FRBs,…
Resolving moving heliospheric structures using interplanetary scintillation observations with the Murchison Widefield Array
A. Waszewski, J. S. Morgan, R. Chhetri +4
We have conducted a blind search in 49 consecutive days of interplanetary scintillation observations made by the Murchison Widefield Array from mid-2019, with overlapping daily obs…
A Measurement of Source Noise at Low Frequency: Implications for Modern Interferometers
John Morgan, Ron Ekers
We report on the detection of source noise in the time domain at 162MHz with the Murchison Widefield Array. During the observation the flux of our target source Virgo A (M87) contr…
First Constraints on Compact Dark Matter from Fast Radio Burst Microstructure
Mawson W. Sammons, Jean-Pierre Macquart, Ron D. Ekers +5
Despite existing constraints, it remains possible that up to of all dark matter is comprised of compact objects, such as the black holes in the 10-100\,M range whose…
ALMA Band 3 polarimetric follow-up of a complete sample of faint PACO sources
Vincenzo Galluzzi, Giuseppe Puglisi, Sandra Burkutean +17
We present Atacama Large Millimeter/submillimiter Array (ALMA) high sensitivity (mJy) polarimetric observations at GHz (Band 3) of a complete sample of $3…
No low-frequency emission from extremely bright Fast Radio Bursts
M. Sokolowski, N. D. R. Bhat, J. P. Macquart +23
We present the results of a coordinated campaign conducted with the Murchison Widefield Array (MWA) to shadow Fast Radio Bursts (FRBs) detected by the Australian Square Kilometre A…
The spectral properties of the bright FRB population
J. -P. Macquart, R. M. Shannon, K. W. Bannister +3
We examine the spectra of 23 fast radio bursts detected in a fly's-eye survey with the Australian SKA Pathfinder, including those of three bursts not previously reported. The mean…
Interplanetary Scintillation with the Murchison Widefield Array V: An All-sky Survey of Compact Sources using a Modern Low-frequency Radio Telescope
J. S. Morgan, J-P. Macquart, R. Chhetri +3
We describe the parameters of a low-frequency all-sky survey of compact radio sources using Interplanetary Scintillation (IPS), undertaken with the Murchison Widefield Array (MWA).…
Interplanetary Scintillation with the Murchison Widefield Array I: A sub-arcsecond Survey over 900 square degrees at 79 and 158 MHz
J . S. Morgan, J-P. Macquart, R. Ekers +6
We present the first dedicated observations of Interplanetary Scintillation (IPS) with the Murchison Widefield Array (MWA). We have developed a synthesis imaging technique, tailore…