The variation of the fine structure constant: an update of statistical analysis with recent data

Autores
Kraiselburd, Lucila; Landau, Susana Judith; Simeone, Claudio Mauricio
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Aims. We analyze different astronomical data of the variation in the fine structure constant obtained with KECK and VLT to check their consistency.Methods. We test consistency using the Student test and confidence intervals. We split the data sets in smaller intervals and group them by i) redshift and ii) angular position. Another statistical analysis is proposed considering phenomenological models for the variation in alpha. Results. Results show consistency for reduced intervals for each pair of data sets considered and suggest that the variation in alpha is important at higher redshifts.Conclusions. Even though the ?dipole model? proposed by Webb et al. seems to be the most accurate phenomenological model, the statistical analyses indicates that the variation in might be depending both on redshift and angular position.
Fil: Kraiselburd, Lucila. Universidad Nacional de la Plata. Facultad de Cs.astronomicas y Geofisicas. Area Fisica Teorica;
Fil: Landau, Susana Judith.
Fil: Simeone, Claudio Mauricio. Departamento de Física. FCEN. UBA;
Materia
STATISTICAL
ANALYSIS
QUASAR
ABSORTION
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:11336/587

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network_name_str CONICET Digital (CONICET)
spelling The variation of the fine structure constant: an update of statistical analysis with recent dataKraiselburd, LucilaLandau, Susana JudithSimeone, Claudio MauricioSTATISTICALANALYSISQUASARABSORTIONhttps://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.3Aims. We analyze different astronomical data of the variation in the fine structure constant obtained with KECK and VLT to check their consistency.Methods. We test consistency using the Student test and confidence intervals. We split the data sets in smaller intervals and group them by i) redshift and ii) angular position. Another statistical analysis is proposed considering phenomenological models for the variation in alpha. Results. Results show consistency for reduced intervals for each pair of data sets considered and suggest that the variation in alpha is important at higher redshifts.Conclusions. Even though the ?dipole model? proposed by Webb et al. seems to be the most accurate phenomenological model, the statistical analyses indicates that the variation in might be depending both on redshift and angular position.Fil: Kraiselburd, Lucila. Universidad Nacional de la Plata. Facultad de Cs.astronomicas y Geofisicas. Area Fisica Teorica;Fil: Landau, Susana Judith.Fil: Simeone, Claudio Mauricio. Departamento de Física. FCEN. UBA;Edp Sciences S A2013-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/587Kraiselburd, Lucila; Landau, Susana Judith; Simeone, Claudio Mauricio; The variation of the fine structure constant: an update of statistical analysis with recent data; Edp Sciences S A; Astronomy And Astrophysics; 557; A36; 9-2013; 1-9;0004-6361enginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201321803info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:43:50Zoai:ri.conicet.gov.ar:11336/587instacron: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 09:43:50.574CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The variation of the fine structure constant: an update of statistical analysis with recent data
title The variation of the fine structure constant: an update of statistical analysis with recent data
spellingShingle The variation of the fine structure constant: an update of statistical analysis with recent data
Kraiselburd, Lucila
STATISTICAL
ANALYSIS
QUASAR
ABSORTION
title_short The variation of the fine structure constant: an update of statistical analysis with recent data
title_full The variation of the fine structure constant: an update of statistical analysis with recent data
title_fullStr The variation of the fine structure constant: an update of statistical analysis with recent data
title_full_unstemmed The variation of the fine structure constant: an update of statistical analysis with recent data
title_sort The variation of the fine structure constant: an update of statistical analysis with recent data
dc.creator.none.fl_str_mv Kraiselburd, Lucila
Landau, Susana Judith
Simeone, Claudio Mauricio
author Kraiselburd, Lucila
author_facet Kraiselburd, Lucila
Landau, Susana Judith
Simeone, Claudio Mauricio
author_role author
author2 Landau, Susana Judith
Simeone, Claudio Mauricio
author2_role author
author
dc.subject.none.fl_str_mv STATISTICAL
ANALYSIS
QUASAR
ABSORTION
topic STATISTICAL
ANALYSIS
QUASAR
ABSORTION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.3
dc.description.none.fl_txt_mv Aims. We analyze different astronomical data of the variation in the fine structure constant obtained with KECK and VLT to check their consistency.Methods. We test consistency using the Student test and confidence intervals. We split the data sets in smaller intervals and group them by i) redshift and ii) angular position. Another statistical analysis is proposed considering phenomenological models for the variation in alpha. Results. Results show consistency for reduced intervals for each pair of data sets considered and suggest that the variation in alpha is important at higher redshifts.Conclusions. Even though the ?dipole model? proposed by Webb et al. seems to be the most accurate phenomenological model, the statistical analyses indicates that the variation in might be depending both on redshift and angular position.
Fil: Kraiselburd, Lucila. Universidad Nacional de la Plata. Facultad de Cs.astronomicas y Geofisicas. Area Fisica Teorica;
Fil: Landau, Susana Judith.
Fil: Simeone, Claudio Mauricio. Departamento de Física. FCEN. UBA;
description Aims. We analyze different astronomical data of the variation in the fine structure constant obtained with KECK and VLT to check their consistency.Methods. We test consistency using the Student test and confidence intervals. We split the data sets in smaller intervals and group them by i) redshift and ii) angular position. Another statistical analysis is proposed considering phenomenological models for the variation in alpha. Results. Results show consistency for reduced intervals for each pair of data sets considered and suggest that the variation in alpha is important at higher redshifts.Conclusions. Even though the ?dipole model? proposed by Webb et al. seems to be the most accurate phenomenological model, the statistical analyses indicates that the variation in might be depending both on redshift and angular position.
publishDate 2013
dc.date.none.fl_str_mv 2013-09
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/11336/587
Kraiselburd, Lucila; Landau, Susana Judith; Simeone, Claudio Mauricio; The variation of the fine structure constant: an update of statistical analysis with recent data; Edp Sciences S A; Astronomy And Astrophysics; 557; A36; 9-2013; 1-9;
0004-6361
url http://hdl.handle.net/11336/587
identifier_str_mv Kraiselburd, Lucila; Landau, Susana Judith; Simeone, Claudio Mauricio; The variation of the fine structure constant: an update of statistical analysis with recent data; Edp Sciences S A; Astronomy And Astrophysics; 557; A36; 9-2013; 1-9;
0004-6361
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201321803
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
dc.publisher.none.fl_str_mv Edp Sciences S A
publisher.none.fl_str_mv Edp Sciences S A
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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score 13.070432