Constraints on variation in α and m e from WMAP 7-year data

Autores
Landau, Susana Judith; Scoccola, Claudia Graciela
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Aims. We update the constraints on the time variation of the fine structure constant α and the electron mass me, using the latest CMB data, including the 7-yr release of WMAP. Methods. We made statistical analyses of the variation of each one of the constants and of their joint variation, together with the basic set of cosmological parameters. We used a modified version of CAMB and COSMOMC to account for these possible variations. Results. We present bounds on the variation of the constants for different data sets, and show how results depend on them. When using the latest CMB data plus the power spectrum from Sloan Digital Sky Survey LRG, we find that α/α0 = 0.986 ± 0.007 at 1-σ level, when the 6 basic cosmological parameters were fitted, and only variation in α was allowed. The constraints in the case of variation of both constants are α/α0 = 0.986 ± 0.009 and me/me0 = 0.999 ± 0.035. In the case of only variation in me, the bound is me/m e0 = 0.964 ± 0.025. © 2010 ESO.
Fil: Landau, Susana Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Scoccola, Claudia Graciela. Gobierno de la Republica Federal de Alemania. Max Planck Institut Fur Astrophysik; Alemania
Materia
COSMIC BACKGROUND RADIATION
COSMOLOGICAL PARAMETERS
EARLY UNIVERSE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/59023

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spelling Constraints on variation in α and m e from WMAP 7-year dataLandau, Susana JudithScoccola, Claudia GracielaCOSMIC BACKGROUND RADIATIONCOSMOLOGICAL PARAMETERSEARLY UNIVERSEhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Aims. We update the constraints on the time variation of the fine structure constant α and the electron mass me, using the latest CMB data, including the 7-yr release of WMAP. Methods. We made statistical analyses of the variation of each one of the constants and of their joint variation, together with the basic set of cosmological parameters. We used a modified version of CAMB and COSMOMC to account for these possible variations. Results. We present bounds on the variation of the constants for different data sets, and show how results depend on them. When using the latest CMB data plus the power spectrum from Sloan Digital Sky Survey LRG, we find that α/α0 = 0.986 ± 0.007 at 1-σ level, when the 6 basic cosmological parameters were fitted, and only variation in α was allowed. The constraints in the case of variation of both constants are α/α0 = 0.986 ± 0.009 and me/me0 = 0.999 ± 0.035. In the case of only variation in me, the bound is me/m e0 = 0.964 ± 0.025. © 2010 ESO.Fil: Landau, Susana Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Scoccola, Claudia Graciela. Gobierno de la Republica Federal de Alemania. Max Planck Institut Fur Astrophysik; AlemaniaEDP Sciences2010-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/59023Landau, Susana Judith; Scoccola, Claudia Graciela; Constraints on variation in α and m e from WMAP 7-year data; EDP Sciences; Astronomy and Astrophysics; 517; 9; 7-2010; 1-40004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201014215info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:28:43Zoai:ri.conicet.gov.ar:11336/59023instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:28:43.783CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Constraints on variation in α and m e from WMAP 7-year data
title Constraints on variation in α and m e from WMAP 7-year data
spellingShingle Constraints on variation in α and m e from WMAP 7-year data
Landau, Susana Judith
COSMIC BACKGROUND RADIATION
COSMOLOGICAL PARAMETERS
EARLY UNIVERSE
title_short Constraints on variation in α and m e from WMAP 7-year data
title_full Constraints on variation in α and m e from WMAP 7-year data
title_fullStr Constraints on variation in α and m e from WMAP 7-year data
title_full_unstemmed Constraints on variation in α and m e from WMAP 7-year data
title_sort Constraints on variation in α and m e from WMAP 7-year data
dc.creator.none.fl_str_mv Landau, Susana Judith
Scoccola, Claudia Graciela
author Landau, Susana Judith
author_facet Landau, Susana Judith
Scoccola, Claudia Graciela
author_role author
author2 Scoccola, Claudia Graciela
author2_role author
dc.subject.none.fl_str_mv COSMIC BACKGROUND RADIATION
COSMOLOGICAL PARAMETERS
EARLY UNIVERSE
topic COSMIC BACKGROUND RADIATION
COSMOLOGICAL PARAMETERS
EARLY UNIVERSE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Aims. We update the constraints on the time variation of the fine structure constant α and the electron mass me, using the latest CMB data, including the 7-yr release of WMAP. Methods. We made statistical analyses of the variation of each one of the constants and of their joint variation, together with the basic set of cosmological parameters. We used a modified version of CAMB and COSMOMC to account for these possible variations. Results. We present bounds on the variation of the constants for different data sets, and show how results depend on them. When using the latest CMB data plus the power spectrum from Sloan Digital Sky Survey LRG, we find that α/α0 = 0.986 ± 0.007 at 1-σ level, when the 6 basic cosmological parameters were fitted, and only variation in α was allowed. The constraints in the case of variation of both constants are α/α0 = 0.986 ± 0.009 and me/me0 = 0.999 ± 0.035. In the case of only variation in me, the bound is me/m e0 = 0.964 ± 0.025. © 2010 ESO.
Fil: Landau, Susana Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Scoccola, Claudia Graciela. Gobierno de la Republica Federal de Alemania. Max Planck Institut Fur Astrophysik; Alemania
description Aims. We update the constraints on the time variation of the fine structure constant α and the electron mass me, using the latest CMB data, including the 7-yr release of WMAP. Methods. We made statistical analyses of the variation of each one of the constants and of their joint variation, together with the basic set of cosmological parameters. We used a modified version of CAMB and COSMOMC to account for these possible variations. Results. We present bounds on the variation of the constants for different data sets, and show how results depend on them. When using the latest CMB data plus the power spectrum from Sloan Digital Sky Survey LRG, we find that α/α0 = 0.986 ± 0.007 at 1-σ level, when the 6 basic cosmological parameters were fitted, and only variation in α was allowed. The constraints in the case of variation of both constants are α/α0 = 0.986 ± 0.009 and me/me0 = 0.999 ± 0.035. In the case of only variation in me, the bound is me/m e0 = 0.964 ± 0.025. © 2010 ESO.
publishDate 2010
dc.date.none.fl_str_mv 2010-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/59023
Landau, Susana Judith; Scoccola, Claudia Graciela; Constraints on variation in α and m e from WMAP 7-year data; EDP Sciences; Astronomy and Astrophysics; 517; 9; 7-2010; 1-4
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/59023
identifier_str_mv Landau, Susana Judith; Scoccola, Claudia Graciela; Constraints on variation in α and m e from WMAP 7-year data; EDP Sciences; Astronomy and Astrophysics; 517; 9; 7-2010; 1-4
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201014215
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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