Matter power spectrum: from Ly$\alpha$ forest to CMB scales

Abstract

We present a new compilation of inferences of the linear 3D matter power spectrum at redshift $z=0$ from a variety of probes spanning several orders of magnitude in physical scale and in cosmic history. We develop a new lower-noise method for performing this inference from the latest Ly$\alpha$ forest 1D power spectrum data. We also include cosmic microwave background (CMB) temperature and polarization power spectra and lensing reconstruction data, the cosmic shear two-point correlation function, and the clustering of luminous red galaxies. We provide a Dockerized Jupyter notebook housing the fairly complex dependencies for producing the plot of these data, with the hope that groups in the future can help add to it. Overall, we find qualitative agreement between the independent measurements considered here and the standard $\Lambda$CDM cosmological model fit to the {\it Planck} data

Published in MNRAS

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