Parameters of cosmological models and recent astronomical observations
Abstract
For different gravitational models we consider limitations on their parameters coming from recent observational data for type Ia supernovae, baryon acoustic oscillations, and from 34 data points for the Hubble parameter H(z) depending on redshift. We calculate parameters of 3 models describing accelerated expansion of the universe: the ΛCDM model, the model with generalized Chaplygin gas (GCG) and the multidimensional model of I. Pahwa, D. Choudhury and T.R. Seshadri. In particular, for the ΛCDM model 1σ estimates of parameters are: H{sub 0}=70.262±0.319 km {sup 1}Mp {sup 1}, Ω{sub m}=0.276{sub 0.008}{sup +0.009}, Ω{sub Λ}=0.769±0.029, Ω{sub k}=0.045±0.032. The GCG model under restriction 0α≥ is reduced to the ΛCDM model. Predictions of the multidimensional model essentially depend on 3 data points for H(z) with z≥2.3.
 Authors:
 Tver state university, 170002, Sadovyj per. 35, Tver (Russian Federation)
 Publication Date:
 OSTI Identifier:
 22375803
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BARYONS; COSMOLOGICAL MODELS; EXPANSION; FORECASTING; OSCILLATIONS; RED SHIFT; SUPERNOVAE; UNIVERSE
Citation Formats
Sharov, G.S., and Vorontsova, E.G., Email: german.sharov@mail.ru, Email: elenavor@inbox.ru. Parameters of cosmological models and recent astronomical observations. United States: N. p., 2014.
Web. doi:10.1088/14757516/2014/10/057.
Sharov, G.S., & Vorontsova, E.G., Email: german.sharov@mail.ru, Email: elenavor@inbox.ru. Parameters of cosmological models and recent astronomical observations. United States. doi:10.1088/14757516/2014/10/057.
Sharov, G.S., and Vorontsova, E.G., Email: german.sharov@mail.ru, Email: elenavor@inbox.ru. 2014.
"Parameters of cosmological models and recent astronomical observations". United States.
doi:10.1088/14757516/2014/10/057.
@article{osti_22375803,
title = {Parameters of cosmological models and recent astronomical observations},
author = {Sharov, G.S. and Vorontsova, E.G., Email: german.sharov@mail.ru, Email: elenavor@inbox.ru},
abstractNote = {For different gravitational models we consider limitations on their parameters coming from recent observational data for type Ia supernovae, baryon acoustic oscillations, and from 34 data points for the Hubble parameter H(z) depending on redshift. We calculate parameters of 3 models describing accelerated expansion of the universe: the ΛCDM model, the model with generalized Chaplygin gas (GCG) and the multidimensional model of I. Pahwa, D. Choudhury and T.R. Seshadri. In particular, for the ΛCDM model 1σ estimates of parameters are: H{sub 0}=70.262±0.319 km {sup 1}Mp {sup 1}, Ω{sub m}=0.276{sub 0.008}{sup +0.009}, Ω{sub Λ}=0.769±0.029, Ω{sub k}=0.045±0.032. The GCG model under restriction 0α≥ is reduced to the ΛCDM model. Predictions of the multidimensional model essentially depend on 3 data points for H(z) with z≥2.3.},
doi = {10.1088/14757516/2014/10/057},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 10,
volume = 2014,
place = {United States},
year = 2014,
month =
}

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