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Abstract:

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. © 2013 ESO.

Registro:

Documento: Artículo
Título:Variation of the fine-structure constant: An update of statistical analyses with recent data
Autor:Kraiselburd, L.; Landau, S.J.; Simeone, C.
Filiación:Grupo de Astrofísica, Relatividad y Cosmología, Facultad de Ciencias Astronómicas y Geofísicas, Universidad de la Plata, Paseo del Bosque S/N, 1900 La Plata, Pcia de Buenos Aires, Argentina
Instituto de Física de Buenos Aires, CONICET-Universidad de Buenos Aires, Ciudad Universitaria-Pab. 1, 1428 Buenos Aires, Argentina
Departamento de Física, FCEN, Ciudad Universitaria-Pab. 1, 1428 Buenos Aires, Argentina
Palabras clave:Cosmology: observations; Methods: data analysis; Quasars: absorption lines; Quasars: emission lines; Confidence interval; Cosmology: observation; Fine structure constants; Methods:data analysis; Phenomenological modeling; Phenomenological models; Quasars: emission line; Quasars:absorption lines; Astronomy; Astrophysics; Statistical methods
Año:2013
Volumen:557
DOI: http://dx.doi.org/10.1051/0004-6361/201321803
Título revista:Astronomy and Astrophysics
Título revista abreviado:Astron. Astrophys.
ISSN:00046361
CODEN:AAEJA
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_00046361_v557_n_p_Kraiselburd.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v557_n_p_Kraiselburd

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Citas:

---------- APA ----------
Kraiselburd, L., Landau, S.J. & Simeone, C. (2013) . Variation of the fine-structure constant: An update of statistical analyses with recent data. Astronomy and Astrophysics, 557.
http://dx.doi.org/10.1051/0004-6361/201321803
---------- CHICAGO ----------
Kraiselburd, L., Landau, S.J., Simeone, C. "Variation of the fine-structure constant: An update of statistical analyses with recent data" . Astronomy and Astrophysics 557 (2013).
http://dx.doi.org/10.1051/0004-6361/201321803
---------- MLA ----------
Kraiselburd, L., Landau, S.J., Simeone, C. "Variation of the fine-structure constant: An update of statistical analyses with recent data" . Astronomy and Astrophysics, vol. 557, 2013.
http://dx.doi.org/10.1051/0004-6361/201321803
---------- VANCOUVER ----------
Kraiselburd, L., Landau, S.J., Simeone, C. Variation of the fine-structure constant: An update of statistical analyses with recent data. Astron. Astrophys. 2013;557.
http://dx.doi.org/10.1051/0004-6361/201321803