Author ORCID Identifier

Stacy S. McGaugh

Document Type

Article

Publication Date

1-19-2024

Abstract

Cosmological parameters are constrained by a wide variety of observations. We examine the concordance diagram for modern measurements of the Hubble constant, the shape parameter from the large-scale structure, the cluster baryon fraction, and the age of the universe, all from non-CMB data. There is good agreement for (Formula presented.) and (Formula presented.). This concordance value is indistinguishable from the WMAP3 cosmology but is not consistent with that of Planck: there is a tension in (Formula presented.) as well as (Formula presented.). These tensions have emerged as progressively higher multipoles have been incorporated into CMB fits. This temporal evolution is suggestive of a systematic effect in the analysis of CMB data at fine angular scales and may be related to the observation of unexpectedly massive galaxies at high redshift. These are overabundant relative to (Formula presented.) CDM predictions by an order of magnitude at (Formula presented.). Such massive objects are anomalous and could cause gravitational lensing of the surface of last scattering in excess of the standard calculation made in CMB fits, potentially skewing the best-fit cosmological parameters and contributing to the Hubble tension.

Keywords

cosmic, early universe, galaxy formation, gravitational lensing, Hubble constant, ingbackground radiation

Publication Title

Universe

Rights

© 2024 by the author. Licensee MDPI, Basel, Switzerland. This is an Open Access work distributed under the terms of the Creative Commons Attribution Licence (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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