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• W4224437613 endingPage "041" @default.
• W4224437613 startingPage "041" @default.
• W4224437613 abstract "We present a formalism for jointly fitting pre- and post-reconstruction redshift-space clustering (RSD) and baryon acoustic oscillations (BAO) plus gravitational lensing (of the CMB) that works directly with the observed 2-point statistics. The formalism is based upon (effective) Lagrangian perturbation theory and a Lagrangian bias expansion, which models RSD, BAO and galaxy-lensing cross correlations within a consistent dynamical framework. As an example we present an analysis of clustering measured by the Baryon Oscillation Spectroscopic Survey in combination with CMB lensing measured by Planck. The post-reconstruction BAO strongly constrains the distance-redshift relation, the full-shape redshift-space clustering constrains the matter density and growth rate, and CMB lensing constrains the clustering amplitude. Using only the redshift space data we obtain $Omega_mathrm{m} = 0.303pm 0.008$, $H_0 = 69.21pm 0.78$ and $sigma_8 = 0.743pm 0.043$. The addition of lensing information, even when restricted to the Northern Galactic Cap, improves constraints to $Omega_m = 0.300 pm 0.008$, $H_0 = 69.21 pm 0.77$ and $sigma_8 = 0.707 pm 0.035$, in tension with CMB and cosmic shear constraints. The combination of $Omega_m$ and $H_0$ are consistent with Planck, though their constraints derive mostly from redshift-space clustering. The low $sigma_8$ value are driven by cross correlations with CMB lensing in the low redshift bin ($zsimeq 0.38$) and at large angular scales, which show a $20%$ deficit compared to expectations from galaxy clustering alone. We conduct several systematics tests on the data and find none that could fully explain these tensions." @default.
• W4224437613 created "2022-04-27" @default.
• W4224437613 creator A5029091681 @default.
• W4224437613 creator A5065077728 @default.
• W4224437613 creator A5068149902 @default.
• W4224437613 creator A5072997937 @default.
• W4224437613 date "2022-07-01" @default.
• W4224437613 modified "2023-10-11" @default.
• W4224437613 title "Cosmological analysis of three-dimensional BOSS galaxy clustering and Planck CMB lensing cross correlations via Lagrangian perturbation theory" @default.
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