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Breaking the matter degeneracy using galaxy clusters

Published on:

9 November 2023

Primary Category:

Cosmology and Nongalactic Astrophysics

Paper Authors:

Anna Chiara Alfano,

Orlando Luongo,

Marco Muccino


Key Details

Proposes model-independent interpolation method to constrain cosmological parameters

Uses Hubble data and galaxy clusters to determine abundances of baryonic and dark matter

Avoids assuming a cosmological model like ΛCDM

Shows technique can alleviate degeneracy between baryonic and dark matter

Finds results agree with ΛCDM, but some tensions like on Hubble constant remain

AI generated summary

Breaking the matter degeneracy using galaxy clusters

This paper proposes a model-independent technique to constrain the abundances of baryonic and dark matter. It interpolates Hubble constant measurements and galaxy cluster data to determine key parameters without assuming an underlying cosmological model. The method shows promise for alleviating degeneracies, though some tensions persist.

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