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dc.contributor.author
Colaço, L. R.  
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Landau, Susana Judith  
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Gonzalez, J. E.  
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Spinelly, J.  
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Santos, G .L. F.  
dc.date.available
2023-10-04T14:01:05Z  
dc.date.issued
2022-08  
dc.identifier.citation
Colaço, L. R.; Landau, Susana Judith; Gonzalez, J. E.; Spinelly, J.; Santos, G .L. F.; Constraining a possible time-variation of the speed of light along with the fine-structure constant using strong gravitational lensing and Type Ia supernovae observations; IOP Publishing; Journal of Cosmology and Astroparticle Physics; 2022; 8; 8-2022; 1-18  
dc.identifier.issn
1475-7516  
dc.identifier.uri
http://hdl.handle.net/11336/214073  
dc.description.abstract
The possible time variation of the fundamental constants of nature has been an active subject of research since the large-number hypothesis was proposed by Dirac. In this paper, we propose a new method to investigate a possible time variation of the speed of light (c) along with the fine-structure constant (α) using Strong Gravitational Lensing (SGL) and Type Ia Supernovae (SNe Ia) observations. We assume a general approach to describe the mass distribution of lens-type galaxies, the one in favor of the power-law index model (PLAW). We also consider the runaway dilaton model to describe a possible time-variation of α. In order to explore the results deeply, we split the SGL sample into five sub-samples according to the lens stellar velocity dispersion and three sub-samples according to lens redshift. The results suggest that it is reasonable to treat the systems separately, but no strong indication of varying c was found.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
IOP Publishing  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
BAYESIAN REASONING  
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GRAVITATIONAL LENSING  
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MODIFIED GRAVITY  
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SUPERNOVAS  
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Astronomía  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Constraining a possible time-variation of the speed of light along with the fine-structure constant using strong gravitational lensing and Type Ia supernovae observations  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2023-07-07T22:24:33Z  
dc.journal.volume
2022  
dc.journal.number
8  
dc.journal.pagination
1-18  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Colaço, L. R.. Universidade Federal do Rio Grande do Norte; Brasil  
dc.description.fil
Fil: Landau, Susana Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina  
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Fil: Gonzalez, J. E.. Universidade Federal de Sergipe; Brasil  
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Fil: Spinelly, J.. Universidade Estadual da Paraiba; Brasil  
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Fil: Santos, G .L. F.. Universidade Estadual da Paraiba; Brasil  
dc.journal.title
Journal of Cosmology and Astroparticle Physics  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1088/1475-7516/2022/08/062