A new parametrization of Hubble function and Hubble tension
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866916397510033408 |
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| author | He, Tong-Yu Yin, Jia-Jun Wang, Zhen-Yu Han, Zhan-Wen Yang, Rong-Jia |
| author_facet | He, Tong-Yu Yin, Jia-Jun Wang, Zhen-Yu Han, Zhan-Wen Yang, Rong-Jia |
| contents | We present a new Hubble parameterization method and employ observational data from Hubble, Pantheon, and Baryon Acoustic Oscillations to constrain model parameters. The proposed method is thoroughly validated against these datasets, demonstrating a robust fit to the observational data. The obtained best-fit values are $H_0 = 67.5^{+1.3}_{-1.6}$ $\text{km s}^{-1} \text{Mpc}^{-1}$, $Ω_{\rm{m0}} = 0.2764\pm{0.0094}$, and $α= 0.33\pm{0.22}$, consistent with the Planck 2018 results, highlighting the existence of Hubble tension. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_17212 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A new parametrization of Hubble function and Hubble tension He, Tong-Yu Yin, Jia-Jun Wang, Zhen-Yu Han, Zhan-Wen Yang, Rong-Jia General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics We present a new Hubble parameterization method and employ observational data from Hubble, Pantheon, and Baryon Acoustic Oscillations to constrain model parameters. The proposed method is thoroughly validated against these datasets, demonstrating a robust fit to the observational data. The obtained best-fit values are $H_0 = 67.5^{+1.3}_{-1.6}$ $\text{km s}^{-1} \text{Mpc}^{-1}$, $Ω_{\rm{m0}} = 0.2764\pm{0.0094}$, and $α= 0.33\pm{0.22}$, consistent with the Planck 2018 results, highlighting the existence of Hubble tension. |
| title | A new parametrization of Hubble function and Hubble tension |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2405.17212 |