Radio interferometric gain calibration can be biased by incomplete sky models and radio
frequency interference, resulting in calibration artefacts that can restrict the dynamic range of …

A major stage of radio interferometric data processing is calibration or the estimation of
systematic errors in the data and the correction for such errors. A stochastic error (noise) …

Solution intervals are often used to improve the signal-to-noise ratio during radio
interferometric gain calibration. This work investigates how factors such as the noise level …

It has recently been shown that radio interferometric gain calibration can be expressed
succinctly in the language of complex optimization. In addition to providing an elegant …

High-fidelity radio interferometric data calibration that minimizes spurious spectral structure
in the calibrated data is essential in astrophysical applications, such as 21 cm cosmology …

The aim of the new generation of radio synthesis arrays such as LOw Frequency ARray
(LOFAR) and Square Kilometre Array (SKA) is to achieve much higher sensitivity, resolution …

Calibration is an essential step in radio interferometric data processing that corrects the data
for systematic errors and, in addition, subtracts bright foreground interference to reveal weak …

Recent developments in optimization theory have extended some traditional algorithms for
least-squares optimization of real-valued functions (Gauss–Newton, Levenberg–Marquardt …

This paper investigates the possibility of improving radio interferometric images using an
algorithm inspired by an optical method known as “lucky imaging”, which would give more …

The data reduction procedure for radio interferometers can be viewed as a combined
calibration and imaging problem. We present an algorithm that unifies cross-calibration, self …