161 citations · 386 across the 12 of their papers we have counts for
5 papers · 1 filter
Advances on the classification of radio image cubes
Steven Ndung'u, Trienko Grobler, Stefan J. Wijnholds +2
Modern radio telescopes will daily generate data sets on the scale of exabytes for systems like the Square Kilometre Array (SKA). Massive data sets are a source of unknown and rare…
Feature Guided Training and Rotational Standardisation for the Morphological Classification of Radio Galaxies
Kevin Brand, Trienko L. Grobler, Waldo Kleynhans +3
State-of-the-art radio observatories produce large amounts of data which can be used to study the properties of radio galaxies. However, with this rapid increase in data volume, it…
Radio Interferometric Calibration Using a Complex Student's t-distribution and Wirtinger Derivatives
Ulrich Armel Mbou Sob, Hertzog Landman Bester, Oleg Smirnov +2
Radio interferometric gain calibration can be biased by incomplete sky models and radio frequency interference, resulting in calibration artefacts that can restrict the dynamic ran…
Redundant interferometric calibration as a complex optimization problem
T. L. Grobler, G. Bernardi, J. S. Kenyon +2
Observations of the redshifted 21-cm line from the epoch of reionization have recently motivated the construction of low frequency radio arrays with highly redundant configurations…
Calibration artefacts in radio interferometry. III. Phase-only calibration and primary beam correction
T. L. Grobler, A. J. Stewart, S. J. Wijnholds +2
This is the third installment in a series of papers in which we investigate calibration artefacts. Calibration artefacts (also known as ghosts or spurious sources) are created when…