The cold dark matter model with cosmological constant and the flatness constraint

The cold dark matter model with cosmological constant and the flatness constraint

The Hubble parameter, a function of the cosmological redshift, is derived from the Friedmann-Robertson-Walker equation. The three physical parameters H0, Ω0m and ΩΛ are determined fitting the Hubble parameter to the data from measurements of redshift and luminosity distances of type-Ia supernovae. The best fit is not consistent with the flatness constraint (k = 0). On the other hand, the flatness constraint is imposed on the Hubble parameter and the physical parameters used are the published values of the standard model of cosmology. The result is shown to be inconsistent with the data from type-Ia supernovae.

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Main Authors: Antunes,A.C.B., Antunes,L.J.
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Física 2010
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000400001
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spelling oai:scielo:S0103-973320100004000012011-01-03The cold dark matter model with cosmological constant and the flatness constraintAntunes,A.C.B.Antunes,L.J. Cold dark matter model Hubble parameter The Hubble parameter, a function of the cosmological redshift, is derived from the Friedmann-Robertson-Walker equation. The three physical parameters H0, Ω0m and ΩΛ are determined fitting the Hubble parameter to the data from measurements of redshift and luminosity distances of type-Ia supernovae. The best fit is not consistent with the flatness constraint (k = 0). On the other hand, the flatness constraint is imposed on the Hubble parameter and the physical parameters used are the published values of the standard model of cosmology. The result is shown to be inconsistent with the data from type-Ia supernovae.info:eu-repo/semantics/openAccessSociedade Brasileira de FísicaBrazilian Journal of Physics v.40 n.4 20102010-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000400001en10.1590/S0103-97332010000400001
institution SCIELO
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country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Antunes,A.C.B.
Antunes,L.J.
spellingShingle Antunes,A.C.B.
Antunes,L.J.
The cold dark matter model with cosmological constant and the flatness constraint
author_facet Antunes,A.C.B.
Antunes,L.J.
author_sort Antunes,A.C.B.
title The cold dark matter model with cosmological constant and the flatness constraint
title_short The cold dark matter model with cosmological constant and the flatness constraint
title_full The cold dark matter model with cosmological constant and the flatness constraint
title_fullStr The cold dark matter model with cosmological constant and the flatness constraint
title_full_unstemmed The cold dark matter model with cosmological constant and the flatness constraint
title_sort cold dark matter model with cosmological constant and the flatness constraint
description The Hubble parameter, a function of the cosmological redshift, is derived from the Friedmann-Robertson-Walker equation. The three physical parameters H0, Ω0m and ΩΛ are determined fitting the Hubble parameter to the data from measurements of redshift and luminosity distances of type-Ia supernovae. The best fit is not consistent with the flatness constraint (k = 0). On the other hand, the flatness constraint is imposed on the Hubble parameter and the physical parameters used are the published values of the standard model of cosmology. The result is shown to be inconsistent with the data from type-Ia supernovae.
publisher Sociedade Brasileira de Física
publishDate 2010
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000400001
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