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DES Y1 results: Splitting growth and geometry to test ΛCDM

Muir, J.; Baxter, E.; Miranda, V.; Doux, C.; Ferte, A.; Leonard, C. D.; Huterer, D.; Jain, B.; Lemos, P.; Raveri, M.; Davis, Tamara; Lidman, Chris; Moller, A.; Zhang, Bonnie


We analyze Dark Energy Survey (DES) data to constrain a cosmological model where a subset of parameters - focusing on ωm - are split into versions associated with structure growth (e.g., ωmgrow) and expansion history (e.g., ωmgeo). Once the parameters have been specified for the ΛCDM cosmological model, which includes general relativity as a theory of gravity, it uniquely predicts the evolution of both geometry (distances) and the growth of structure over cosmic time. Any inconsistency between...[Show more]

CollectionsANU Research Publications
Date published: 2021
Type: Journal article
Source: Physical Review D
DOI: 10.1103/PhysRevD.103.023528
Access Rights: Open Access


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