On the cosmic distance duality relation and strong gravitational lens power law density profile

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dc.contributor.authorLima, F. S.
dc.contributor.authorHolanda, R. F.L.
dc.contributor.authorPereira, S. H. [UNESP]
dc.contributor.authorda Silva, W. J.C.
dc.contributor.institutionUniversidade Federal do Rio Grande do Norte
dc.contributor.institutionUniversidade Federal de Campina Grande
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-29T08:32:14Z
dc.date.available2022-04-29T08:32:14Z
dc.date.issued2021-08-01
dc.description.abstractMany new strong gravitational lensing (SGL) systems have been discovered in the last two decades with the advent of powerful new space and ground-based telescopes. The effect of the lens mass model (usually the power-law mass model) on cosmological parameters constraints has been performed recently in literature. In this paper, by using SGL systems and Supernovae type Ia observations, we explore if the power-law mass density profile (ρ ⋊ r-γ) is consistent with the cosmic distance duality relation (CDDR), DL(1 + z)-2/DA = η(z) = 1, by considering different lens mass intervals. It has been obtained that the verification of the CDDR validity is significantly dependent on lens mass interval considered: The sub-sample with σap ≥ 300 km/s (where σap is the lens apparent stellar velocity dispersion) is in full agreement with the CDDR validity, the sub-sample with intermediate σap values (200 ≤ σap < 300) km/s is marginally consistent with η = 1 and, finally, the sub-sample with low σap values (σap < 200 km/s) ruled out the CDDR validity with high statistical confidence. Therefore, if one takes the CDDR as guarantee, our results suggest that using a single density profile is not suitable to describe lens with low σap values and it is only an approximate description to lenses with intermediate mass interval.en
dc.description.affiliationDepartamento de Física Universidade Federal do Rio Grande do Norte
dc.description.affiliationDepartamento de Física Universidade Federal de Campina Grande
dc.description.affiliationDepartamento de Física Universidade Federal de Sergipe
dc.description.affiliationDepartamento de Física Faculdade de Engenharia de Guaratinguetá Universidade Estadual Paulista (UNESP)
dc.description.affiliationUnespDepartamento de Física Faculdade de Engenharia de Guaratinguetá Universidade Estadual Paulista (UNESP)
dc.identifierhttp://dx.doi.org/10.1088/1475-7516/2021/08/035
dc.identifier.citationJournal of Cosmology and Astroparticle Physics, v. 2021, n. 8, 2021.
dc.identifier.doi10.1088/1475-7516/2021/08/035
dc.identifier.issn1475-7516
dc.identifier.scopus2-s2.0-85113348990
dc.identifier.urihttp://hdl.handle.net/11449/229392
dc.language.isoeng
dc.relation.ispartofJournal of Cosmology and Astroparticle Physics
dc.sourceScopus
dc.subjectGravitational lensing
dc.subjectSupernova type Ia - standard candles
dc.titleOn the cosmic distance duality relation and strong gravitational lens power law density profileen
dc.typeArtigo

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