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Supernovae constraints on models of dark energy reexamined

Title
Supernovae constraints on models of dark energy reexamined
Type
Article in International Scientific Journal
Year
2005
Authors
bento, mc
(Author)
Other
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bertolami, o
(Author)
Other
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santos, nmc
(Author)
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sen, aa
(Author)
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Journal
Vol. 71 No. 3
Pages: 1-11
ISSN: 1550-7998
Scientific classification
FOS: Natural sciences > Physical sciences
Other information
Authenticus ID: P-000-4M8
Abstract (EN): We use the Type la Supernova gold sample data of Riess et al in order to constrain three models of dark energy. We study the Cardassian model, the Dvali-Turner gravity modified model, and the generalized Chaplygin gas model of dark energy-dark matter unification. In our best-fit analysis for these three dark energy proposals we consider the flat model and the nonflat model priors. We also discuss the degeneracy of the models with the XCDM model through the computation of the so-called jerk parameter.
Language: English
Type (Professor's evaluation): Scientific
Contact: bento@sirius.ist.utl.pt; orfeu@cosmos.ist.utl.pt; ncsantos@cftp.ist.utl.pt; anjan@cftp.ist.utl.pt
No. of pages: 11
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