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Map-based asymmetric beam treatment: application of real-space beam patterns in CMB data analysis

Basyrov, Artem
arXiv (All) · Papers
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cosmology-and-nongalactic-astrophysics
Real telescope beams are asymmetric, breaking the simple $B_{\ell}$ factorisation in harmonic space and coupling modes across $\ell$ and $m$. We develop a map-domain treatment in which beam convolution is a local, scan-dependent operation applied directly to the time-ordered data (TOD), accommodatin
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