248 citations · 771 across the 28 of their papers we have counts for
10 papers · 1 filter
Africanus III. pfb-imaging -- a flexible radio interferometric imaging suite
Hertzog L. Bester, Jonathan S. Kenyon, Audrey Repetti +8
The popularity of the CLEAN algorithm in radio interferometric imaging stems from its maturity, speed, and robustness. While many alternatives have been proposed in the literature,…
Cygnus A jointly calibrated and imaged via non-convex optimisation from VLA data
Arwa Dabbech, Audrey Repetti, Rick A. Perley +2
Radio interferometric (RI) data are noisy under-sampled spatial Fourier components of the unknown radio sky affected by direction-dependent antenna gains. Failure to model these an…
A practical preconditioner for wide-field continuum imaging of radio interferometric data
Hertzog L. Bester, Audrey Repetti, Simon Perkins +2
The celebrated CLEAN algorithm has been the cornerstone of deconvolution algorithms in radio interferometry almost since its conception in the 1970s. For all its faults, CLEAN is r…
The LOFAR Two Meter Sky Survey: Deep Fields, I -- Direction-dependent calibration and imaging
C. Tasse, T. Shimwell, M. J. Hardcastle +29
The Low Frequency Array (LOFAR) is an ideal instrument to conduct deep extragalactic surveys. It has a large field of view and is sensitive to large scale and compact emission. It…
Parallel faceted imaging in radio interferometry via proximal splitting (Faceted HyperSARA): I. Algorithm and simulations
Pierre-Antoine Thouvenin, Abdullah Abdulaziz, Arwa Dabbech +2
Upcoming radio interferometers are aiming to image the sky at new levels of resolution and sensitivity, with wide-band image cubes reaching close to the Petabyte scale for SKA. Mod…
Polca SARA - Full polarization, direction-dependent calibration and sparse imaging for radio interferometry
Jasleen Birdi, Audrey Repetti, Yves Wiaux
New generation of radio interferometers are envisaged to produce high quality, high dynamic range Stokes images of the observed sky from the corresponding under-sampled Fourier dom…
Sparse interferometric Stokes imaging under polarization constraint (Polarized SARA)
Jasleen Birdi, Audrey Repetti, Yves Wiaux
We develop a novel algorithm for sparse Stokes parameters imaging in radio interferometry under the polarization constraint. The latter is a physical non-linear relation between th…
Non-convex optimization for self-calibration of direction-dependent effects in radio interferometric imaging
Audrey Repetti, Jasleen Birdi, Arwa Dabbech +1
Radio interferometric imaging aims to estimate an unknown sky intensity image from degraded observations, acquired through an antenna array. In the theoretical case of a perfectly…
A regularized tri-linear approach for optical interferometric imaging
Jasleen Birdi, Audrey Repetti, Yves Wiaux
In the context of optical interferometry, only undersampled power spectrum and bispectrum data are accessible. It poses an ill-posed inverse problem for image recovery. Recently, a…
Scalable splitting algorithms for big-data interferometric imaging in the SKA era
Alexandru Onose, Rafael E. Carrillo, Audrey Repetti +4
In the context of next generation radio telescopes, like the Square Kilometre Array, the efficient processing of large-scale datasets is extremely important. Convex optimisation ta…