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21-cm cosmology 1foreground mitigation 1mutual coupling 1primary beam correction 1radio interferometry 1ska-low 1

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astro-ph.CO2026

Direct Primary Beam Correction: Untangling Mutual Coupling in 21-cm Cosmological Experiments with the SKA-Low Radio Telescope

Oscar S. D. O'Hara, Quentin Gueuning, Eloy de Lera Acedo +7

The paper presents Direct Primary Beam Correction, a method that uses regularized inversion of stacked Jones matrices to reconstruct and correct the far‑field beam pattern of SKA‑L…