Model independent constraints on transition redshift

dc.contributor.authorJesus, J. F. [UNESP]
dc.contributor.authorHolanda, R. F.L.
dc.contributor.authorPereira, S. H. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal Do Rio Grande Do Norte
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.contributor.institutionUniversidade Federal de Campina Grande
dc.date.accessioned2018-12-11T17:20:40Z
dc.date.available2018-12-11T17:20:40Z
dc.date.issued2018-05-30
dc.description.abstractThis paper aims to put constraints on the transition redshift zt, which determines the onset of cosmic acceleration, in cosmological-model independent frameworks. In order to perform our analyses, we consider a flat universe and assume a parametrization for the comoving distance DC(z) up to third degree on z, a second degree parametrization for the Hubble parameter H(z) and a linear parametrization for the deceleration parameter q(z). For each case, we show that type Ia supernovae and H(z) data complement each other on the parameter space and tighter constrains for the transition redshift are obtained. By combining the type Ia supernovae observations and Hubble parameter measurements it is possible to constrain the values of zt, for each approach, as 0.806± 0.094, 0.870± 0.063 and 0.973± 0.058 at 1σ c.l., respectively. Then, such approaches provide cosmological-model independent estimates for this parameter.en
dc.description.affiliationUniversidade Estadual Paulista (Unesp) Campus Experimental de Itapeva, R. Geraldo Alckmin 519
dc.description.affiliationUniversidade Estadual Paulista (Unesp) Faculdade de Engenharia de Guaratinguetá Departamento de Física e Química, Av. Dr. Ariberto Pereira da Cunha 333
dc.description.affiliationDepartamento de Física Teórica e Experimental Universidade Federal Do Rio Grande Do Norte, Av. Sen. Salgado Filho 3000, RN
dc.description.affiliationDepartamento de Física Universidade Federal de Sergipe, Av. Marechal Rondon S/N
dc.description.affiliationDepartamento de Física Universidade Federal de Campina Grande, R. Aprígio Veloso 882
dc.description.affiliationUnespUniversidade Estadual Paulista (Unesp) Campus Experimental de Itapeva, R. Geraldo Alckmin 519
dc.description.affiliationUnespUniversidade Estadual Paulista (Unesp) Faculdade de Engenharia de Guaratinguetá Departamento de Física e Química, Av. Dr. Ariberto Pereira da Cunha 333
dc.identifierhttp://dx.doi.org/10.1088/1475-7516/2018/05/073
dc.identifier.citationJournal of Cosmology and Astroparticle Physics, v. 2018, n. 5, 2018.
dc.identifier.doi10.1088/1475-7516/2018/05/073
dc.identifier.file2-s2.0-85048072813.pdf
dc.identifier.issn1475-7516
dc.identifier.scopus2-s2.0-85048072813
dc.identifier.urihttp://hdl.handle.net/11449/176401
dc.language.isoeng
dc.relation.ispartofJournal of Cosmology and Astroparticle Physics
dc.relation.ispartofsjr1,089
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectredshift surveys
dc.subjectsupernova type Ia-standard candles
dc.titleModel independent constraints on transition redshiften
dc.typeArtigo

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