63 citations · 121 across the 7 of their papers we have counts for
7 papers
A GPU-based Imager with Polarised Primary-beam Correction
Chris J. Skipper, Anna M. M. Scaife, J. Patrick Leahy
The next generation of radio telescopes will strive for unprecedented dynamic range across wide fields of view, and direction-dependent gains such as the gain from the primary-beam…
Cleaning radio interferometric images using a spherical wavelet decomposition
Chris J. Skipper, Anna M. M. Scaife, Jason D. McEwen
The deconvolution, or cleaning, of radio interferometric images often involves computing model visibilities from a list of clean components, in order that the contribution from the…
Fast W-Projection for Wide-field Imaging
Luis F. R. Lucas, Chris J. Skipper, Anna M. M. Scaife
Wide-field imaging has become a major challenge for modern radio astronomy, which uses high sensitivity acquisition systems that deal with huge amounts of data. In this paper we in…
Spatially-Offset AGN Candidates in the CLASS Survey
Chris J. Skipper, Ian W. A. Browne
Prompted by a recent claim by Barrows et al. that X-ray AGN are often found significantly offset from the centres of their host galaxies, we have looked for examples of compact rad…
Long-term X-Ray Spectral Variability in AGN from the Palomar sample observed by Swift
S. D. Connolly, I. M. McHardy, C. J. Skipper +1
We present X-ray spectral variability of 24 local active galactic nuclei (AGN) from the Palomar sample of nearby galaxies, as observed mainly by Swift. From hardness ratio measurem…
Probing the hard and intermediate states of X-ray binaries using short time-scale variability
Chris J. Skipper, Ian M. McHardy
Below an accretion rate of approximately a few per cent of the Eddington accretion rate, X-ray binary systems are not usually found in the soft spectral state. However, at accretio…