Bayesian correction of H(z) data uncertainties
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2018 |
| Outros Autores: | , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Institucional da UNESP |
| Texto Completo: | http://dx.doi.org/10.1093/mnras/sty813 http://hdl.handle.net/11449/176338 |
Resumo: | We compile 41 H(z) data from literature and use them to constrain OΛCDM and flat ΛCDM parameters. We show that the available H(z) suffers from uncertainties overestimation and propose a Bayesian method to reduce them. As a result of this method, using H(z) only, we find, in the context of OΛCDM, H0 = 69.5 ± 2.5 kms-1 Mpc-1, Ωm = 0.242 ± 0.036, and ΩΛ = 0.68 ± 0.14. In the context of flatΛCDMmodel,we have foundH0 =70.4±1.2 kms-1 Mpc-1 and Ωm = 0.256 ± 0.014. This corresponds to an uncertainty reduction of up to ≈30 per cent when compared to the uncorrected analysis in both cases. |
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Bayesian correction of H(z) data uncertaintiesCosmological parametersCosmology: ObservationsDark energyDark matterWe compile 41 H(z) data from literature and use them to constrain OΛCDM and flat ΛCDM parameters. We show that the available H(z) suffers from uncertainties overestimation and propose a Bayesian method to reduce them. As a result of this method, using H(z) only, we find, in the context of OΛCDM, H0 = 69.5 ± 2.5 kms-1 Mpc-1, Ωm = 0.242 ± 0.036, and ΩΛ = 0.68 ± 0.14. In the context of flatΛCDMmodel,we have foundH0 =70.4±1.2 kms-1 Mpc-1 and Ωm = 0.256 ± 0.014. This corresponds to an uncertainty reduction of up to ≈30 per cent when compared to the uncorrected analysis in both cases.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Universidade Estadual Paulista (UNESP) Câmpus Experimental de Itapeva, Rua Geraldo Alckmin 519, Vila N. Sra. de FátimaUniversidade Estadual Paulista (UNESP) Faculdade de Engenharia Guaratinguetá Departamento de Física e Química, Av. Dr. Ariberto Pereira da Cunha 333Universidade Estadual Paulista (UNESP) Instituto de Física TeóricaLaboratório Interinstitucional de e-Astronomia - LIneA, Rua General José Cristino, 77Departamento de Física Instituto de Ciências Ambientais Químicas e Farmacêuticas - ICAQF Universidade Federal de São Paulo (UNIFESP) Unidade José Alencar, Rua São Nicolau No. 210Universidade Estadual Paulista (UNESP) Câmpus Experimental de Itapeva, Rua Geraldo Alckmin 519, Vila N. Sra. de FátimaUniversidade Estadual Paulista (UNESP) Faculdade de Engenharia Guaratinguetá Departamento de Física e Química, Av. Dr. Ariberto Pereira da Cunha 333Universidade Estadual Paulista (UNESP) Instituto de Física TeóricaCNPq: 465376/2014-2Universidade Estadual Paulista (Unesp)Laboratório Interinstitucional de e-Astronomia - LIneAUniversidade Federal de São Paulo (UNIFESP)Jesus, J. F. [UNESP]Gregório, T. M. [UNESP]Andrade-Oliveira, F. [UNESP]Valentim, R.Matos, C. A.O. [UNESP]2018-12-11T17:20:11Z2018-12-11T17:20:11Z2018-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2867-2873application/pdfhttp://dx.doi.org/10.1093/mnras/sty813Monthly Notices of the Royal Astronomical Society, v. 477, n. 3, p. 2867-2873, 2018.1365-29660035-8711http://hdl.handle.net/11449/17633810.1093/mnras/sty8132-s2.0-850471073682-s2.0-85047107368.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMonthly Notices of the Royal Astronomical Society2,3462,346info:eu-repo/semantics/openAccess2024-01-08T06:23:50Zoai:repositorio.unesp.br:11449/176338Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-08T06:23:50Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
| dc.title.none.fl_str_mv |
Bayesian correction of H(z) data uncertainties |
| title |
Bayesian correction of H(z) data uncertainties |
| spellingShingle |
Bayesian correction of H(z) data uncertainties Jesus, J. F. [UNESP] Cosmological parameters Cosmology: Observations Dark energy Dark matter |
| title_short |
Bayesian correction of H(z) data uncertainties |
| title_full |
Bayesian correction of H(z) data uncertainties |
| title_fullStr |
Bayesian correction of H(z) data uncertainties |
| title_full_unstemmed |
Bayesian correction of H(z) data uncertainties |
| title_sort |
Bayesian correction of H(z) data uncertainties |
| author |
Jesus, J. F. [UNESP] |
| author_facet |
Jesus, J. F. [UNESP] Gregório, T. M. [UNESP] Andrade-Oliveira, F. [UNESP] Valentim, R. Matos, C. A.O. [UNESP] |
| author_role |
author |
| author2 |
Gregório, T. M. [UNESP] Andrade-Oliveira, F. [UNESP] Valentim, R. Matos, C. A.O. [UNESP] |
| author2_role |
author author author author |
| dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Laboratório Interinstitucional de e-Astronomia - LIneA Universidade Federal de São Paulo (UNIFESP) |
| dc.contributor.author.fl_str_mv |
Jesus, J. F. [UNESP] Gregório, T. M. [UNESP] Andrade-Oliveira, F. [UNESP] Valentim, R. Matos, C. A.O. [UNESP] |
| dc.subject.por.fl_str_mv |
Cosmological parameters Cosmology: Observations Dark energy Dark matter |
| topic |
Cosmological parameters Cosmology: Observations Dark energy Dark matter |
| description |
We compile 41 H(z) data from literature and use them to constrain OΛCDM and flat ΛCDM parameters. We show that the available H(z) suffers from uncertainties overestimation and propose a Bayesian method to reduce them. As a result of this method, using H(z) only, we find, in the context of OΛCDM, H0 = 69.5 ± 2.5 kms-1 Mpc-1, Ωm = 0.242 ± 0.036, and ΩΛ = 0.68 ± 0.14. In the context of flatΛCDMmodel,we have foundH0 =70.4±1.2 kms-1 Mpc-1 and Ωm = 0.256 ± 0.014. This corresponds to an uncertainty reduction of up to ≈30 per cent when compared to the uncorrected analysis in both cases. |
| publishDate |
2018 |
| dc.date.none.fl_str_mv |
2018-12-11T17:20:11Z 2018-12-11T17:20:11Z 2018-07-01 |
| 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/10.1093/mnras/sty813 Monthly Notices of the Royal Astronomical Society, v. 477, n. 3, p. 2867-2873, 2018. 1365-2966 0035-8711 http://hdl.handle.net/11449/176338 10.1093/mnras/sty813 2-s2.0-85047107368 2-s2.0-85047107368.pdf |
| url |
http://dx.doi.org/10.1093/mnras/sty813 http://hdl.handle.net/11449/176338 |
| identifier_str_mv |
Monthly Notices of the Royal Astronomical Society, v. 477, n. 3, p. 2867-2873, 2018. 1365-2966 0035-8711 10.1093/mnras/sty813 2-s2.0-85047107368 2-s2.0-85047107368.pdf |
| dc.language.iso.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
Monthly Notices of the Royal Astronomical Society 2,346 2,346 |
| dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
2867-2873 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 |
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Repositório Institucional da UNESP |
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Repositório Institucional da UNESP |
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Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
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1799965554139725824 |