98 citations · 304 across the 13 of their papers we have counts for
14 papers
Understanding spectral artefacts in SKA-LOW 21-cm cosmology experiments: the impact of cable reflections
Oscar Sage David O'Hara, Fred Dulwich, Eloy de Lera Acedo +4
The Cosmic Dawn was marked by the formation of the first stars, and preceded the Epoch of Reionization (EoR), when the Universe underwent a fundamental transformation caused by the…
SKA LFAA Station Design Report
Eloy de Lera Acedo, Hardie Pienaar, Nima Razavi Ghods +16
This report was submitted as part of the SKA Low Frequency Aperture Array Critical Design Review describing the design of the SKA1-LOW station that took place between 2013 and 2018…
Science Pipelines for the Square Kilometre Array
Jamie Farnes, Ben Mort, Fred Dulwich +2
The Square Kilometre Array (SKA) will be both the largest radio telescope ever constructed and the largest Big Data project in the known Universe. The first phase of the project wi…
Analysing the impact of far-out side-lobes on the imaging performance of the SKA-LOW telescope
Benjamin Mort, Fred Dulwich, Nima Razavi-Ghods +2
The Square Kilometre Array's Low Frequency instrument (SKA-LOW) will be the most sensitive aperture array ever used for radio astronomy, and will operate in the under-sampled regim…
Limits on Fast Radio Bursts at 145 MHz with ARTEMIS, a real-time software backend
A. Karastergiou, J. Chennamangalam, W. Armour +22
Fast Radio Bursts (FRBs), are millisecond radio signals that exhibit dispersion larger than what the Galactic electron density can account for. We have conducted a 1446 hour survey…
Cosmic Dawn and Epoch of Reionization Foreground Removal with the SKA
Emma Chapman, Anna Bonaldi, Geraint Harker +8
The exceptional sensitivity of the SKA will allow observations of the Cosmic Dawn and Epoch of Reionization (CD/EoR) in unprecedented detail, both spectrally and spatially. This we…
Effect of gain and phase errors on SKA1-low imaging quality from 50-600 MHz
David Sinclair, Fred Dulwich, Benjamin Mort +3
Simulations of SKA1-low were performed to estimate the noise level in images produced by the telescope over a frequency range 50-600 MHz, which extends the 50-350 MHz range of the…
The Effect of Foreground Mitigation Strategy on EoR Window Recovery
Emma Chapman, Saleem Zaroubi, Filipe Abdalla +3
The removal of the Galactic and extragalactic foregrounds remains a major challenge for those wishing to make a detection of the Epoch of Reionization 21-cm signal. Multiple method…
A GPU-based survey for millisecond radio transients using ARTEMIS
W. Armour, A. Karastergiou, M. Giles +7
Astrophysical radio transients are excellent probes of extreme physical processes originating from compact sources within our Galaxy and beyond. Radio frequency signals emitted fro…
Real-time, fast radio transient searches with GPU de-dispersion
Alessio Magro, Aris Karastergiou, Stefano Salvini +3
The identification, and subsequent discovery, of fast radio transients through blind-search surveys requires a large amount of processing power, in worst cases scaling as $\mathcal…
A Multiwavelength Spectral and Polarimetric Study of the Jet of 3C 264
Eric S. Perlman, C. Alex Padgett, Markos Georganopoulos +12
We present a comprehensive multiband spectral and polarimetric study of the jet of 3C 264 (NGC 3862). Included in this study are three HST optical and ultraviolet polarimetry data…
The magnetic field and geometry of the oblique shock in the jet of 3C 346
F. Dulwich, D. M. Worrall, M. Birkinshaw +2
We investigate the brightest regions of the kpc-scale jet in the powerful radio galaxy 3C 346, using new optical HST ACS/F606W polarimetry together with Chandra X-ray data and 14.9…
The structure of the jet in 3C 15 from multi-band polarimetry
F. Dulwich, D. M. Worrall, M. Birkinshaw +2
We investigate the structure of the kpc-scale jet in the nearby (z = 0.073) radio galaxy 3C 15, using new optical Hubble Space Telescope (HST) ACS/F606W polarimetry together with a…
Optical Polarimetry of the Jets of Nearby Radio Galaxies: I. The Data
Eric S. Perlman, C. A. Padgett, Markos Georganopoulos +11
We present an overview of new HST imaging polarimetry of six nearby radio galaxies with optical jets. These observations triple the number of extragalactic jets with subarcsecond-r…