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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/587
Ver los metadatos del registro completo
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oai:ri.conicet.gov.ar:11336/587 |
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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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1844613379891658752 |
score |
13.070432 |