A calibration strategy using full-Jones corrections with an in-field unpolarised calibrator and visibility-based multi-epoch alignment enables sub-arcsecond polarimetric imaging with LOFAR at metre wavelengths.
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2 Pith papers cite this work. Polarity classification is still indexing.
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abstract
We present techniques developed to calibrate and correct Murchison Widefield Array (MWA) low frequency (72-300 MHz) radio observations for polarimetry. The extremely wide field-of-view, excellent instantaneous (u, v)-coverage and sensitivity to degree-scale structure that the MWA provides enable instrumental calibration, removal of instrumental artefacts, and correction for ionospheric Faraday rotation through imaging techniques. With the demonstrated polarimetric capabilities of the MWA, we discuss future directions for polarimetric science at low frequencies to answer outstanding questions relating to polarised source counts, source depolarisation, pulsar science, low-mass stars, exoplanets, the nature of the interstellar and intergalactic media, and the solar environment.
fields
astro-ph.IM 2years
2026 2representative citing papers
SKA-Low can characterise mid-latitude ionospheric structure via multiple interferometric phase-screen and scintillation methods, with forward modelling linking observables to physical plasma conditions.
citing papers explorer
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Polarisation and Faraday rotation measure imaging at metre wavelengths with sub-arcsecond resolution: a foundational calibration strategy
A calibration strategy using full-Jones corrections with an in-field unpolarised calibrator and visibility-based multi-epoch alignment enables sub-arcsecond polarimetric imaging with LOFAR at metre wavelengths.
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Methods of Observing and Characterising the Ionosphere with SKA-Low
SKA-Low can characterise mid-latitude ionospheric structure via multiple interferometric phase-screen and scintillation methods, with forward modelling linking observables to physical plasma conditions.