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Galaxies 2016, 4(3), 8; doi:10.3390/galaxies4030008

Status on Bidimensional Dark Energy Parameterizations Using SNe Ia JLA and BAO Datasets

Mesoamerican Centre for Theoretical Physics, Universidad Autónoma de Chiapas, Carretera Zapata Km. 4, Real del Bosque (Terán), Tuxtla Gutiérrez 29040, Chiapas, México
Academic Editor: Emilio Elizalde
Received: 31 May 2016 / Revised: 15 July 2016 / Accepted: 19 July 2016 / Published: 26 July 2016
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Abstract

Using current observations of forecast type Ia supernovae (SNe Ia) Joint Lightcurve Analysis (JLA) and baryon acoustic oscillations (BAO), in this paper we investigate six bidimensional dark energy parameterizations in order to explore which has more constraining power. Our results indicate that for parameterizations that contain z 2 -terms, the tension (σ-distance) between these datasets seems to be reduced and their behaviour is <1σ compatible with the concordance model (ΛCDM). Also, the results obtained by performing their Bayesian evidence show a striking evidence in favour of the ΛCDM model, but only one parameterization can be distinguished by around 1 % from the other models when the combination of datasets are considered. View Full-Text
Keywords: dark energy; observational cosmology; general statistical methods dark energy; observational cosmology; general statistical methods
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Escamilla-Rivera, C. Status on Bidimensional Dark Energy Parameterizations Using SNe Ia JLA and BAO Datasets. Galaxies 2016, 4, 8.

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