Faceting for direction-dependent spectral deconvolution
C Tasse, B Hugo, M Mirmont, O Smirnov… - Astronomy & …, 2018 - aanda.org
The new generation of radio interferometers is characterized by high sensitivity, wide fields
of view and large fractional bandwidth. To synthesize the deepest images enabled by the …
of view and large fractional bandwidth. To synthesize the deepest images enabled by the …
GALARIO: a GPU accelerated library for analysing radio interferometer observations
We present GALARIO, a computational library that exploits the power of modern graphical
processing units (GPUs) to accelerate the analysis of observations from radio …
processing units (GPUs) to accelerate the analysis of observations from radio …
cubical – fast radio interferometric calibration suite exploiting complex optimization
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 …
succinctly in the language of complex optimization. In addition to providing an elegant …
A super-resolution analysis of the DSHARP survey: substructure is common in the inner 30 au
The DSHARP survey evidenced the ubiquity of substructure in the mm dust distribution of
large, bright protoplanetary discs. Intriguingly, these data sets have yet higher resolution …
large, bright protoplanetary discs. Intriguingly, these data sets have yet higher resolution …
Unified radio interferometric calibration and imaging with joint uncertainty quantification
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 …
calibration and imaging problem. We present an algorithm that unifies cross-calibration, self …
Multi-GPU maximum entropy image synthesis for radio astronomy
The maximum entropy method (MEM) is a well known deconvolution technique in radio-
interferometry. This method solves a non-linear optimization problem with an entropy …
interferometry. This method solves a non-linear optimization problem with an entropy …
Seeing the unseen: a method to detect unresolved rings in protoplanetary disks
CE Scardoni, RA Booth, CJ Clarke… - The Astrophysical …, 2024 - iopscience.iop.org
Abstract While high-resolution Atacama Large Millimeter/submillimeter Array (ALMA)
observations reveal a wealth of substructure in protoplanetary disks, they remain incapable …
observations reveal a wealth of substructure in protoplanetary disks, they remain incapable …
Radio interferometric calibration using a complex Student's t-distribution and Wirtinger derivatives
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 …
frequency interference, resulting in calibration artefacts that can restrict the dynamic range of …
Resolving the blazar CGRaBS J0809+ 5341 in the presence of telescope systematics
Abstract We analyse Very Long Baseline Interferometry (VLBI) observations of the blazar
CGRaBS J0809+ 5341 using Bayesian inference methods. The observation was carried out …
CGRaBS J0809+ 5341 using Bayesian inference methods. The observation was carried out …
Africanus I. Scalable, distributed and efficient radio data processing with Dask-MS and Codex Africanus
New radio interferometers such as MeerKAT, SKA, ngVLA, and DSA-2000 drive
advancements in software for two key reasons. First, handling the vast data from these …
advancements in software for two key reasons. First, handling the vast data from these …