A unified likelihood analysis of Planck, ACT, and SPT data finds ΛCDM parameters stable under foreground model variations while neutrino-sector extension parameters show up to 35% larger uncertainties after marginalization.
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Halo model predictions match Websky simulations well for Planck filters but differ by ~20% for Simons Observatory filters, exceeding error bars and consistent with missing higher-order terms in the kSZ signal.
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Combining CMB datasets with consistent foreground modelling
A unified likelihood analysis of Planck, ACT, and SPT data finds ΛCDM parameters stable under foreground model variations while neutrino-sector extension parameters show up to 35% larger uncertainties after marginalization.
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Comparison of Halo Model and Simulation Predictions for Projected-Field Kinematic Sunyaev-Zel'dovich Cross-Correlations
Halo model predictions match Websky simulations well for Planck filters but differ by ~20% for Simons Observatory filters, exceeding error bars and consistent with missing higher-order terms in the kSZ signal.