Artículo

Holanda, R.F.L.; Landau, S.J.; Alcaniz, J.S.; Sánchez, G.I.E.; Busti, V.C. "Constraints on a possible variation of the fine structure constant from galaxy cluster data" (2016) Journal of Cosmology and Astroparticle Physics. 2016(5)
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Abstract:

We propose a new method to probe a possible time evolution of the fine structure constant α from X-ray and Sunyaev-Zel'dovich measurements of the gas mass fraction (fgas) in galaxy clusters. Taking into account a direct relation between variations of α and violations of the distance-duality relation, we discuss constraints on α for a class of dilaton runaway models. Although not yet competitive with bounds from high-z quasar absorption systems, our constraints, considering a sample of 29 measurements of fgas, in the redshift interval 0.14 < z < 0.89, provide an independent estimate of α variation at low and intermediate redshifts. Furthermore, current and planned surveys will provide a larger amount of data and thus allow to improve the limits on α variation obtained in the present analysis. © 2016 IOP Publishing Ltd and Sissa Medialab srl .

Registro:

Documento: Artículo
Título:Constraints on a possible variation of the fine structure constant from galaxy cluster data
Autor:Holanda, R.F.L.; Landau, S.J.; Alcaniz, J.S.; Sánchez, G.I.E.; Busti, V.C.
Filiación:Departamento de Física, Universidade Estadual da Paraíba, Campina Grande-PB, 58429-500, Brazil
Departamento de Física, Universidade Federal de Campina Grande, Campina Grande-PB, 58429-900, Brazil
Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, IFIBA, CONICET, Ciudad Universitaria-PabI, Buenos Aires, 1428, Argentina
Departamento de Astronomia, Observatório Nacional, Rio de Janeiro-RJ, 20921-400, Brazil
Departamento de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, São Paulo-SP, 05508-090, Brazil
Palabras clave:galaxy clusters; Sunyaev-Zeldovich effect; X-rays
Año:2016
Volumen:2016
Número:5
DOI: http://dx.doi.org/10.1088/1475-7516/2016/05/047
Título revista:Journal of Cosmology and Astroparticle Physics
Título revista abreviado:J. Cosmol. Astroparticle Phys.
ISSN:14757516
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14757516_v2016_n5_p_Holanda

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Citas:

---------- APA ----------
Holanda, R.F.L., Landau, S.J., Alcaniz, J.S., Sánchez, G.I.E. & Busti, V.C. (2016) . Constraints on a possible variation of the fine structure constant from galaxy cluster data. Journal of Cosmology and Astroparticle Physics, 2016(5).
http://dx.doi.org/10.1088/1475-7516/2016/05/047
---------- CHICAGO ----------
Holanda, R.F.L., Landau, S.J., Alcaniz, J.S., Sánchez, G.I.E., Busti, V.C. "Constraints on a possible variation of the fine structure constant from galaxy cluster data" . Journal of Cosmology and Astroparticle Physics 2016, no. 5 (2016).
http://dx.doi.org/10.1088/1475-7516/2016/05/047
---------- MLA ----------
Holanda, R.F.L., Landau, S.J., Alcaniz, J.S., Sánchez, G.I.E., Busti, V.C. "Constraints on a possible variation of the fine structure constant from galaxy cluster data" . Journal of Cosmology and Astroparticle Physics, vol. 2016, no. 5, 2016.
http://dx.doi.org/10.1088/1475-7516/2016/05/047
---------- VANCOUVER ----------
Holanda, R.F.L., Landau, S.J., Alcaniz, J.S., Sánchez, G.I.E., Busti, V.C. Constraints on a possible variation of the fine structure constant from galaxy cluster data. J. Cosmol. Astroparticle Phys. 2016;2016(5).
http://dx.doi.org/10.1088/1475-7516/2016/05/047