A search for the variation of speed of light using galaxy cluster gas mass fraction measurements
| Autor: | R. F. L. Holanda, I. E. C. R. Mendonça, Kamal Bora, Shantanu Desai, S. H. Pereira |
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| Přispěvatelé: | Universidade Federal Do Rio Grande Do Norte, Indian Institute of Technology Kandi, Universidade Federal de Campina Grande, Universidade Federal de Sergipe (UFS), Universidade Estadual Paulista (UNESP) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Cosmology and Nongalactic Astrophysics (astro-ph.CO) COSMIC cancer database FOS: Physical sciences Astronomy and Astrophysics General Relativity and Quantum Cosmology (gr-qc) Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Speed of light (cellular automaton) Redshift General Relativity and Quantum Cosmology Baryon Supernova galaxy clusters Degeneracy (mathematics) Mass fraction cosmology of theories beyond the SM Galaxy cluster supernova type Ia-standard candles Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | In this paper, we implement a new method to test the invariance of the speed of light ($c$) as a function of redshift, by combining the measurements of galaxy cluster gas mass fraction, $H(z)$ from cosmic chronometers, and Type-Ia supernovae (SNe Ia). In our analyses, we consider both a constant depletion factor (which corresponds to the ratio by which the cluster gas mass fraction is depleted with respect to the universal baryonic mean) and one varying with redshift. We also consider the influence of different $H_0$ estimates on our results. We look for a variation of $c$, given by $c(z)=c_0(1+c_1z)$. We find a degeneracy between our final results on $c$ variation and the assumptions on the gas mass fraction depletion factor. Most of our analyses indicate negligible variation of the speed of light. 8 pages, 7 figures , I table, Accepted for publication in JCAP |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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