GRB Hubble diagram and constraints on a Λ(t) CDM model

Detalhes bibliográficos
Autor(a) principal: Velten, H.
Data de Publicação: 2013
Outros Autores: Montiel, A., Carneiro, Saulo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/13750
Resumo: p. 3301-3306
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spelling Velten, H.Montiel, A.Carneiro, Saulo2013-11-19T20:01:42Z2013-11-19T20:01:42Z20131365-2966http://repositorio.ufba.br/ri/handle/ri/13750v. 431, n. 4p. 3301-3306In previous papers, a cosmological model with constant rate particle creation and vacuum term decaying linearly with the Hubble parameter was shown to lead to a good concordance when tested against precise observations: the position of the first peak in the spectrum of anisotropies of the cosmic microwave background (CMB), the Hubble diagram for Type Ia supernovae (SNe Ia), the distribution of large-scale structures and the distance to the baryonic acoustic oscillations (BAO). That model has the same number of parameters as the spatially flat standard model and seems to alleviate some observational/theoretical tensions appearing in the latter. In this paper, we complement those tests with 109 gamma-ray bursts (GRBs), 59 of them with redshifts above z = 1.4, which permits to extend the Hubble diagram to redshifts up to z ≈ 8. For the calibration of the 50 GRBs with z < 1.4, we use the 288 supernovae of the Sloan Digital Sky Survey project, calibrated with the MLCS2k2 fitter, less model-dependent than other samples like Union2. Our results show a good concordance with the previous tests and, again, less tensions between SNe Ia and GRB best fits as compared to the standard model.Submitted by Santiago Fabio (fabio.ssantiago@hotmail.com) on 2013-11-06T17:47:55Z No. of bitstreams: 1 22222.pdf: 515820 bytes, checksum: c632dca72b71eaa52e124e42c9c05726 (MD5)Approved for entry into archive by Rodrigo Meirelles (rodrigomei@ufba.br) on 2013-11-19T20:01:42Z (GMT) No. of bitstreams: 1 22222.pdf: 515820 bytes, checksum: c632dca72b71eaa52e124e42c9c05726 (MD5)Made available in DSpace on 2013-11-19T20:01:42Z (GMT). No. of bitstreams: 1 22222.pdf: 515820 bytes, checksum: c632dca72b71eaa52e124e42c9c05726 (MD5) Previous issue date: 2013SalvadorOxford journalsBrasilhttp://mnras.oxfordjournals.org/content/431/4/3301reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBACosmological parametersDark energyDark matterGRB Hubble diagram and constraints on a Λ(t) CDM modelOxford journalsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessengORIGINAL22222.pdf22222.pdfapplication/pdf515820https://repositorio.ufba.br/bitstream/ri/13750/1/22222.pdfc632dca72b71eaa52e124e42c9c05726MD51LICENSElicense.txtlicense.txttext/plain1383https://repositorio.ufba.br/bitstream/ri/13750/2/license.txt05eca2f01d0b3307819d0369dab18a34MD52TEXT22222.pdf.txt22222.pdf.txtExtracted texttext/plain31014https://repositorio.ufba.br/bitstream/ri/13750/3/22222.pdf.txt8d05c4a8fdc84b2a10ee85415cb7ecc0MD53ri/137502022-03-23 20:18:53.431oai:repositorio.ufba.br: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ório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-03-23T23:18:53Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv GRB Hubble diagram and constraints on a Λ(t) CDM model
dc.title.alternative.pt_BR.fl_str_mv Oxford journals
title GRB Hubble diagram and constraints on a Λ(t) CDM model
spellingShingle GRB Hubble diagram and constraints on a Λ(t) CDM model
Velten, H.
Cosmological parameters
Dark energy
Dark matter
title_short GRB Hubble diagram and constraints on a Λ(t) CDM model
title_full GRB Hubble diagram and constraints on a Λ(t) CDM model
title_fullStr GRB Hubble diagram and constraints on a Λ(t) CDM model
title_full_unstemmed GRB Hubble diagram and constraints on a Λ(t) CDM model
title_sort GRB Hubble diagram and constraints on a Λ(t) CDM model
author Velten, H.
author_facet Velten, H.
Montiel, A.
Carneiro, Saulo
author_role author
author2 Montiel, A.
Carneiro, Saulo
author2_role author
author
dc.contributor.author.fl_str_mv Velten, H.
Montiel, A.
Carneiro, Saulo
dc.subject.por.fl_str_mv Cosmological parameters
Dark energy
Dark matter
topic Cosmological parameters
Dark energy
Dark matter
description p. 3301-3306
publishDate 2013
dc.date.accessioned.fl_str_mv 2013-11-19T20:01:42Z
dc.date.available.fl_str_mv 2013-11-19T20:01:42Z
dc.date.issued.fl_str_mv 2013
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufba.br/ri/handle/ri/13750
dc.identifier.issn.none.fl_str_mv 1365-2966
dc.identifier.number.pt_BR.fl_str_mv v. 431, n. 4
identifier_str_mv 1365-2966
v. 431, n. 4
url http://repositorio.ufba.br/ri/handle/ri/13750
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Oxford journals
dc.publisher.country.fl_str_mv Brasil
publisher.none.fl_str_mv Oxford journals
dc.source.pt_BR.fl_str_mv http://mnras.oxfordjournals.org/content/431/4/3301
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