Variation of the fine-structure constant: an update of statistical analyses with recent data

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Aims. We analyze the consistency of different astronomical data of the variation in the fine-structure constant obtained with Keck and VLT. Methods. We tested the consistency using the Student test and confidence intervals. We splited the data sets into smaller intervals and grouped them according...

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Detalles Bibliográficos
Autores principales:	Kraiselburd, Lucila, Landau, Susana Judith, Simeone, C.
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2013
Materias:	Ciencias Astronómicas Física Cosmology: observations Methods: data analysis Quasars: absorption lines Quasars: emission lines
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/85391
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-85391
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Astronómicas Física Cosmology: observations Methods: data analysis Quasars: absorption lines Quasars: emission lines
spellingShingle	Ciencias Astronómicas Física Cosmology: observations Methods: data analysis Quasars: absorption lines Quasars: emission lines Kraiselburd, Lucila Landau, Susana Judith Simeone, C. Variation of the fine-structure constant: an update of statistical analyses with recent data
topic_facet	Ciencias Astronómicas Física Cosmology: observations Methods: data analysis Quasars: absorption lines Quasars: emission lines
description	Aims. We analyze the consistency of different astronomical data of the variation in the fine-structure constant obtained with Keck and VLT. Methods. We tested the consistency using the Student test and confidence intervals. We splited the data sets into smaller intervals and grouped them according to redshift and angular position. Another statistical analysis is proposed that considers phenomenological models for the variation in α. Results. Results show consistency for the reduced intervals for each pair of data sets and suggests that the variation in α is significant at higher redshifts. Conclusions. Even though the dipole model seems to be the most accurate phenomenological model, the statistical analyses indicate that the variation in α might be depending on both redshift and angular position.
format	Articulo Articulo
author	Kraiselburd, Lucila Landau, Susana Judith Simeone, C.
author_facet	Kraiselburd, Lucila Landau, Susana Judith Simeone, C.
author_sort	Kraiselburd, Lucila
title	Variation of the fine-structure constant: an update of statistical analyses with recent data
title_short	Variation of the fine-structure constant: an update of statistical analyses with recent data
title_full	Variation of the fine-structure constant: an update of statistical analyses with recent data
title_fullStr	Variation of the fine-structure constant: an update of statistical analyses with recent data
title_full_unstemmed	Variation of the fine-structure constant: an update of statistical analyses with recent data
title_sort	variation of the fine-structure constant: an update of statistical analyses with recent data
publishDate	2013
url	http://sedici.unlp.edu.ar/handle/10915/85391
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bdutipo_str	Repositorios
_version_	1764820489354608642

Variation of the fine-structure constant: an update of statistical analyses with recent data

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