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dc.contributor.authorLiberato, Lamartine
dc.contributor.authorRosenfeld, Rogério [UNESP]
dc.date.accessioned2014-05-20T15:21:03Z
dc.date.available2014-05-20T15:21:03Z
dc.date.issued2006-07-01
dc.identifierhttp://dx.doi.org/10.1088/1475-7516/2006/07/009
dc.identifier.citationJournal of Cosmology and Astroparticle Physics. Bristol: Iop Publishing Ltd, n. 7, 15 p., 2006.
dc.identifier.issn1475-7516
dc.identifier.urihttp://hdl.handle.net/11449/32241
dc.description.abstractThere are a plethora of dark energy parametrizations that can fit current supernovae Ia data. However, these data are only sensitive to redshifts up to order one. In fact, many of these parametrizations break down at higher redshifts. In this paper we study the effect of dark energy models on the formation of dark halos. We select a couple of dark energy parametrizations which are sensible at high redshifts and compute their effect on the evolution of density perturbations in the linear and non-linear regimes. Using the Press-Schechter formalism we show that they produce distinguishable signatures in the number counts of dark halos. Therefore, future observations of galaxy clusters can provide complementary constraints on the behaviour of dark energy.en
dc.format.extent15
dc.language.isoeng
dc.publisherIop Publishing Ltd
dc.relation.ispartofJournal of Cosmology and Astroparticle Physics
dc.sourceWeb of Science
dc.subjectdark energy theorypt
dc.subjectcosmological perturbation theorypt
dc.subjectclassical tests of cosmologypt
dc.subjectsemi-analytic modellingpt
dc.titleDark energy parametrizations and their effect on dark halosen
dc.typeArtigo
dcterms.licensehttp://iopscience.iop.org/page/copyright
dcterms.rightsHolderIop Publishing Ltd
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.description.affiliationState Univ São Paulo, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.description.affiliationUnespState Univ São Paulo, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.identifier.doi10.1088/1475-7516/2006/07/009
dc.identifier.wosWOS:000239451000007
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt
dc.relation.ispartofjcr5.126
dc.relation.ispartofsjr1,089
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