3 papers
astro-ph.IM2025
Accelerating the CLEAN algorithm of radio interferometry with convex optimization
Hendrik Müller, Mingyu Hsieh, Sanjay Bhatnagar
In radio-interferometry, we recover an image from an incompletely sampled Fourier data. The de-facto standard algorithm, the Cotton-Schwab CLEAN, is iteratively switching between c…
astro-ph.IM2025
To CLEAN or not to CLEAN: Data Processing in the ngVLA era
Hendrik Müller
Radio interferometric imaging has long relied on the CLEAN algorithm, valued for its speed, robustness, and integration with calibration pipelines. However, next-generation facilit…
astro-ph.IM2025
How to make CLEAN variants faster? Using clustered components informed by the autocorrelation function
Hendrik Müller, Sanjay Bhatnagar
Deconvolution, imaging and calibration of data from radio interferometers is a challenging computational (inverse) problem. The upcoming generation of radio telescopes poses signif…