Neglecting frequency-dependent beams in a Simons Observatory-like analysis biases foreground parameters by more than 2 sigma and cosmological parameters by up to 0.3 sigma, making per-component color-corrected beams necessary.
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Modeling beam chromaticity for high-resolution CMB analyses
Neglecting frequency-dependent beams in a Simons Observatory-like analysis biases foreground parameters by more than 2 sigma and cosmological parameters by up to 0.3 sigma, making per-component color-corrected beams necessary.