Preprint Conference Paper Version 1 This version not peer reviewed

Constraints on Dark Energy Models from Selected Galaxy Clusters (S-Z + X-Ray Data) and Gravitational Lensing Data

Version 1 : Received: 6 December 2016 / Approved: 8 December 2016 / Online: 8 December 2016 (09:56:37 CET)
Version 2 : Received: 9 December 2016 / Approved: 10 December 2016 / Online: 10 December 2016 (08:24:22 CET)

How to cite: Bonilla Rivera, A.; Hernandez, J.E.C. Constraints on Dark Energy Models from Selected Galaxy Clusters (S-Z + X-Ray Data) and Gravitational Lensing Data. Preprints 2016, 2016120045 (doi: 10.20944/preprints201612.0045.v1). Bonilla Rivera, A.; Hernandez, J.E.C. Constraints on Dark Energy Models from Selected Galaxy Clusters (S-Z + X-Ray Data) and Gravitational Lensing Data. Preprints 2016, 2016120045 (doi: 10.20944/preprints201612.0045.v1).

Abstract

The Sunyaev-Zeldovich effect (SZe) is a global distortion of Cosmic Microwave Bckground (CMB) spectrum as result of its interaction with a hot electron plasma in the intracluster medium for large gravitational virialized structures such as galaxy clusters. Furthermore, this hot gas of electrons emits X-Rays due to its fall in the gravitational potential well of the cluster. The analysis of SZe and X-Ray data, provide a method for calculating distances to galaxy clusters at any redshift (Angular diameter distance (dA) and gas mass fraction (fgas)). On the other side, many of these galaxy clusters produce a Strong Gravitational Lens effect (SGL), which has become an useful astrophysical tool for cosmology. We use these cosmological tests, in addition to the more traditional ones (SNIa, CMB, BAO), to constraint alternative models of dark energy (ωCDM, CPL, IDE, EDE) and study the history of expansion through the cosmographic parameters (H(z), q(z), j(z)). Using Akaike and Bayesian Information Criterion (AIC, BIC) we find that the ωCDM and ΛCDM models are the most favored by the observational data. In addition, we found that at low redshift appears an peculiar behavior of slowdown of aceleration, which occurs only on dynamical dark energy models using only galaxy clusters (dA,clusters + fgas).

Subject Areas

Sunyaev-Zeldovich effect, galaxy clusters, dark energy models

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