2025/04/28 by J. F. Radcliffe, J. P. McKean, Radcliffe, Jack F. +7
Physics and Astronomy · #Adaptive optics and wavefront sensing #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Radio Astronomy Observations and Technology
paper · pdf · doi:10.48550/arxiv.2504.19579
openalex publication_date 2025/04/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Very Long Baseline Interferometry (VLBI) combines the signals of telescopes distributed across thousands of kilometres to provide some of the highest angular resolution images of astrophysical phenomena. Due to computational expense, typical VLBI observations are restricted to a single target and a small (few arcseconds) field-of-view per pointing. The technique of wide-field VLBI was born to enable the targeting of multiple sources and has been successful in providing new insights into Active Galactic Nuclei, the interstellar medium, supernovae, gravitational lenses and much more. However, this technique is still only employed in a few experiments, restricting the scientific potential of VLBI observations. In this conference proceeding, we outline new developments in wide-field VLBI, including an end-to-end correlation and calibration workflow, distributed correlation, and new calibration routines. These developments aim to enable wide-field VLBI to be a standard observing mode on all major VLBI arrays.