Non-parametric reconstruction of the fine structure constant with galaxy clusters
Abstract Testing possible variations in fundamental constants of nature is a crucial endeavor in observational cosmology. This paper investigates potential cosmological variations in the fine structure constant ( $$\alpha $$ α ) through a non-parametric approach, using galaxy cluster observations as...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-10-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-13468-0 |
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| author | Marcelo Ferreira Rodrigo F. L. Holanda Javier E. Gonzalez L. R. Colaço Rafael C. Nunes |
| author_facet | Marcelo Ferreira Rodrigo F. L. Holanda Javier E. Gonzalez L. R. Colaço Rafael C. Nunes |
| author_sort | Marcelo Ferreira |
| collection | DOAJ |
| description | Abstract Testing possible variations in fundamental constants of nature is a crucial endeavor in observational cosmology. This paper investigates potential cosmological variations in the fine structure constant ( $$\alpha $$ α ) through a non-parametric approach, using galaxy cluster observations as the primary cosmological probe. We employ two methodologies based on galaxy cluster gas mass fraction measurements derived from X-ray and Sunyaev–Zeldovich observations, along with luminosity distances from type Ia supernovae. We also explore how different values of the Hubble constant ( $$H_0$$ H 0 ) impact the variation of $$\alpha $$ α across cosmic history. When using the Planck satellite’s $$H_0$$ H 0 observations, a constant $$\alpha $$ α is ruled out at approximately the 3 $$\sigma $$ σ confidence level for $$z \lesssim 0.5$$ z ≲ 0.5 . Conversely, employing local estimates of $$H_0$$ H 0 restores agreement with a constant $$\alpha $$ α . |
| format | Article |
| id | doaj-art-b01bed9d3f124b9ebc2919c81d651261 |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-b01bed9d3f124b9ebc2919c81d6512612024-12-08T12:43:00ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-10-01841011010.1140/epjc/s10052-024-13468-0Non-parametric reconstruction of the fine structure constant with galaxy clustersMarcelo Ferreira0Rodrigo F. L. Holanda1Javier E. Gonzalez2L. R. Colaço3Rafael C. Nunes4Departamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do NorteDepartamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do NorteDepartamento de Física, Universidade Federal de SergipeDepartamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do NorteInstituto de Física, Universidade Federal do Rio Grande do SulAbstract Testing possible variations in fundamental constants of nature is a crucial endeavor in observational cosmology. This paper investigates potential cosmological variations in the fine structure constant ( $$\alpha $$ α ) through a non-parametric approach, using galaxy cluster observations as the primary cosmological probe. We employ two methodologies based on galaxy cluster gas mass fraction measurements derived from X-ray and Sunyaev–Zeldovich observations, along with luminosity distances from type Ia supernovae. We also explore how different values of the Hubble constant ( $$H_0$$ H 0 ) impact the variation of $$\alpha $$ α across cosmic history. When using the Planck satellite’s $$H_0$$ H 0 observations, a constant $$\alpha $$ α is ruled out at approximately the 3 $$\sigma $$ σ confidence level for $$z \lesssim 0.5$$ z ≲ 0.5 . Conversely, employing local estimates of $$H_0$$ H 0 restores agreement with a constant $$\alpha $$ α .https://doi.org/10.1140/epjc/s10052-024-13468-0 |
| spellingShingle | Marcelo Ferreira Rodrigo F. L. Holanda Javier E. Gonzalez L. R. Colaço Rafael C. Nunes Non-parametric reconstruction of the fine structure constant with galaxy clusters European Physical Journal C: Particles and Fields |
| title | Non-parametric reconstruction of the fine structure constant with galaxy clusters |
| title_full | Non-parametric reconstruction of the fine structure constant with galaxy clusters |
| title_fullStr | Non-parametric reconstruction of the fine structure constant with galaxy clusters |
| title_full_unstemmed | Non-parametric reconstruction of the fine structure constant with galaxy clusters |
| title_short | Non-parametric reconstruction of the fine structure constant with galaxy clusters |
| title_sort | non parametric reconstruction of the fine structure constant with galaxy clusters |
| url | https://doi.org/10.1140/epjc/s10052-024-13468-0 |
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