Testing the cosmic conservation of photon number with type Ia supernovae and ages of old objects

dc.contributor.authorJesus, J. F. [UNESP]
dc.contributor.authorHolanda, R. F.L.
dc.contributor.authorDantas, M. A.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.contributor.institutionUniversidade Federal de Campina Grande
dc.contributor.institutionUniversidade Federal do Rio Grande do Norte
dc.contributor.institutionUniversidade do Estado do Rio Grande do Norte
dc.date.accessioned2018-12-11T17:15:56Z
dc.date.available2018-12-11T17:15:56Z
dc.date.issued2017-12-01
dc.description.abstractIn this paper, we obtain luminosity distances by using ages of 32 old passive galaxies distributed over the redshift interval 0.11 < z< 1.84 and test the cosmic conservation of photon number by comparing them with 580 distance moduli of type Ia supernovae (SNe Ia) from the so-called Union 2.1 compilation. Our analyses are based on the fact that the method of obtaining ages of galaxies relies on the detailed shape of galaxy spectra but not on galaxy luminosity. Possible departures from cosmic conservation of photon number is parametrized by τ(z) = 2 ε z and τ(z) = ε z/ (1 + z) (for ε = 0 the conservation of photon number is recovered). We find ε=0.016-0.075+0.078 from the first parametrization and ε=-0.18-0.24+0.25 from the second parametrization, both limits at 95% c.l. In this way, no significant departure from cosmic conservation of photon number is verified. In addition, by considering the total age as inferred from Planck (2015) analysis, we find the incubation time ti n c= 1.66 ± 0.29 Gyr and ti n c= 1.23 ± 0.27 Gyr at 68% c.l. for each parametrization, respectively.en
dc.description.affiliationUniversidade Estadual Paulista (Unesp), Câmpus Experimental de Itapeva
dc.description.affiliationFaculdade de Engenharia Guaratinguetá Universidade Estadual Paulista (Unesp)
dc.description.affiliationDepartamento de Física Universidade Federal de Sergipe
dc.description.affiliationDepartamento de Física Universidade Federal de Campina Grande
dc.description.affiliationDepartamento de Física Universidade Federal do Rio Grande do Norte
dc.description.affiliationDepartamento de Física Universidade do Estado do Rio Grande do Norte
dc.description.affiliationUnespUniversidade Estadual Paulista (Unesp), Câmpus Experimental de Itapeva
dc.description.affiliationUnespFaculdade de Engenharia Guaratinguetá Universidade Estadual Paulista (Unesp)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 2013/26258-4
dc.description.sponsorshipIdFAPESP: 2017/05859-7
dc.description.sponsorshipIdCNPq: 303734/2014-0
dc.description.sponsorshipIdCNPq: 478524/2013-7
dc.identifierhttp://dx.doi.org/10.1007/s10714-017-2317-5
dc.identifier.citationGeneral Relativity and Gravitation, v. 49, n. 12, 2017.
dc.identifier.doi10.1007/s10714-017-2317-5
dc.identifier.file2-s2.0-85033457335.pdf
dc.identifier.issn1572-9532
dc.identifier.issn0001-7701
dc.identifier.scopus2-s2.0-85033457335
dc.identifier.urihttp://hdl.handle.net/11449/175464
dc.language.isoeng
dc.relation.ispartofGeneral Relativity and Gravitation
dc.relation.ispartofsjr0,598
dc.relation.ispartofsjr0,598
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectCosmic opacity
dc.subjectGalaxy ages
dc.subjectScale distance
dc.subjectType Ia Supernovae
dc.titleTesting the cosmic conservation of photon number with type Ia supernovae and ages of old objectsen
dc.typeArtigo
unesp.author.orcid0000-0002-0917-5216[1]

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