414 citations · 2.2k across the 54 of their papers we have counts for
6 papers · 1 filter
H-FISTA: A hierarchical algorithm for phase retrieval with application to pulsar dynamic spectra
Stefan Osłowski, Mark A. Walker
A pulsar dynamic spectrum is an inline digital hologram of the interstellar medium; it encodes information on the propagation paths by which signals have travelled from source to t…
Observations of Low-Frequency Radio Emission from Millisecond Pulsars and Multipath Propagation in the Interstellar Medium
N. D. R. Bhat, S. E. Tremblay, F. Kirsten +23
Studying the gravitational-wave sky with pulsar timing arrays (PTAs) is a key science goal for the Square Kilometre Array (SKA) and its pathfinder telescopes. With current PTAs rea…
A Serendipitous MWA Search for Narrow-band and Broad-band Low Frequency Radio Transmissions from 1I/2017 U1 'Oumuamua
S. J. Tingay, D. L. Kaplan, E. Lenc +18
We examine data from the Murchison Widefield Array (MWA) in the frequency range 72 -- 102 MHz for a field-of-view that serendipitously contained the interstellar object 'Oumuamua o…
Dynamic spectral mapping of interstellar plasma lenses
Artem V. Tuntsov, Mark A. Walker, Leon V. E. Koopmans +5
Compact radio sources sometimes exhibit intervals of large, rapid changes in their flux-density, due to lensing by interstellar plasma crossing the line-of-sight. A novel survey pr…
VAST: An ASKAP Survey for Variables and Slow Transients
Tara Murphy, Shami Chatterjee, David L. Kaplan +36
The Australian Square Kilometre Array Pathfinder (ASKAP) will give us an unprecedented opportunity to investigate the transient sky at radio wavelengths. In this paper we present V…
The Australia Telescope 20GHz Survey: Hardware, Observing Strategy, and Scanning Survey Catalog
Paul J. Hancock, Paul Roberts, Michael J. Kesteven +17
The Australia Telescope 20GHz (AT20G) survey is a large area (2π sr), sensitive (40mJy), high frequency (20GHz) survey of the southern sky. The survey was conducted in two parts: a…