Variation of the fine-structure constant: An update of statistical analyses with recent data
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 t...
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v557_n_p_Kraiselburd http://hdl.handle.net/20.500.12110/paper_00046361_v557_n_p_Kraiselburd |
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paper:paper_00046361_v557_n_p_Kraiselburd2023-06-08T14:28:05Z Variation of the fine-structure constant: An update of statistical analyses with recent data Landau, Susana J. Simeone, Claudio Mauricio 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 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. Fil:Landau, S.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Simeone, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v557_n_p_Kraiselburd http://hdl.handle.net/20.500.12110/paper_00046361_v557_n_p_Kraiselburd |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Landau, Susana J. Simeone, Claudio Mauricio Variation of the fine-structure constant: An update of statistical analyses with recent data |
| topic_facet |
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 |
| 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. © 2013 ESO. |
| author |
Landau, Susana J. Simeone, Claudio Mauricio |
| author_facet |
Landau, Susana J. Simeone, Claudio Mauricio |
| author_sort |
Landau, Susana J. |
| 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 |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v557_n_p_Kraiselburd http://hdl.handle.net/20.500.12110/paper_00046361_v557_n_p_Kraiselburd |
| work_keys_str_mv |
AT landaususanaj variationofthefinestructureconstantanupdateofstatisticalanalyseswithrecentdata AT simeoneclaudiomauricio variationofthefinestructureconstantanupdateofstatisticalanalyseswithrecentdata |
| _version_ |
1768545075779862528 |