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

Detalhes bibliográficos
Autor(a) principal: Jesus, J. F. [UNESP]
Data de Publicação: 2017
Outros Autores: Holanda, R. F.L., Dantas, M. A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s10714-017-2317-5
http://hdl.handle.net/11449/175464
Resumo: In 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.
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spelling Testing the cosmic conservation of photon number with type Ia supernovae and ages of old objectsCosmic opacityGalaxy agesScale distanceType Ia SupernovaeIn 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.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Universidade Estadual Paulista (Unesp), Câmpus Experimental de ItapevaFaculdade de Engenharia Guaratinguetá Universidade Estadual Paulista (Unesp)Departamento de Física Universidade Federal de SergipeDepartamento de Física Universidade Federal de Campina GrandeDepartamento de Física Universidade Federal do Rio Grande do NorteDepartamento de Física Universidade do Estado do Rio Grande do NorteUniversidade Estadual Paulista (Unesp), Câmpus Experimental de ItapevaFaculdade de Engenharia Guaratinguetá Universidade Estadual Paulista (Unesp)FAPESP: 2013/26258-4FAPESP: 2017/05859-7CNPq: 303734/2014-0CNPq: 478524/2013-7Universidade Estadual Paulista (Unesp)Universidade Federal de Sergipe (UFS)Universidade Federal de Campina GrandeUniversidade Federal do Rio Grande do NorteUniversidade do Estado do Rio Grande do NorteJesus, J. F. [UNESP]Holanda, R. F.L.Dantas, M. A.2018-12-11T17:15:56Z2018-12-11T17:15:56Z2017-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1007/s10714-017-2317-5General Relativity and Gravitation, v. 49, n. 12, 2017.1572-95320001-7701http://hdl.handle.net/11449/17546410.1007/s10714-017-2317-52-s2.0-850334573352-s2.0-85033457335.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGeneral Relativity and Gravitation0,5980,598info:eu-repo/semantics/openAccess2024-01-21T06:24:39Zoai:repositorio.unesp.br:11449/175464Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:36:01.574345Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Testing the cosmic conservation of photon number with type Ia supernovae and ages of old objects
title Testing the cosmic conservation of photon number with type Ia supernovae and ages of old objects
spellingShingle Testing the cosmic conservation of photon number with type Ia supernovae and ages of old objects
Jesus, J. F. [UNESP]
Cosmic opacity
Galaxy ages
Scale distance
Type Ia Supernovae
title_short Testing the cosmic conservation of photon number with type Ia supernovae and ages of old objects
title_full Testing the cosmic conservation of photon number with type Ia supernovae and ages of old objects
title_fullStr Testing the cosmic conservation of photon number with type Ia supernovae and ages of old objects
title_full_unstemmed Testing the cosmic conservation of photon number with type Ia supernovae and ages of old objects
title_sort Testing the cosmic conservation of photon number with type Ia supernovae and ages of old objects
author Jesus, J. F. [UNESP]
author_facet Jesus, J. F. [UNESP]
Holanda, R. F.L.
Dantas, M. A.
author_role author
author2 Holanda, R. F.L.
Dantas, M. A.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade Federal de Sergipe (UFS)
Universidade Federal de Campina Grande
Universidade Federal do Rio Grande do Norte
Universidade do Estado do Rio Grande do Norte
dc.contributor.author.fl_str_mv Jesus, J. F. [UNESP]
Holanda, R. F.L.
Dantas, M. A.
dc.subject.por.fl_str_mv Cosmic opacity
Galaxy ages
Scale distance
Type Ia Supernovae
topic Cosmic opacity
Galaxy ages
Scale distance
Type Ia Supernovae
description In 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.
publishDate 2017
dc.date.none.fl_str_mv 2017-12-01
2018-12-11T17:15:56Z
2018-12-11T17:15:56Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1007/s10714-017-2317-5
General Relativity and Gravitation, v. 49, n. 12, 2017.
1572-9532
0001-7701
http://hdl.handle.net/11449/175464
10.1007/s10714-017-2317-5
2-s2.0-85033457335
2-s2.0-85033457335.pdf
url http://dx.doi.org/10.1007/s10714-017-2317-5
http://hdl.handle.net/11449/175464
identifier_str_mv General Relativity and Gravitation, v. 49, n. 12, 2017.
1572-9532
0001-7701
10.1007/s10714-017-2317-5
2-s2.0-85033457335
2-s2.0-85033457335.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv General Relativity and Gravitation
0,598
0,598
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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