Observational constraints on Yukawa cosmology and connection with black hole shadows
| Title: | Observational constraints on Yukawa cosmology and connection with black hole shadows |
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| Authors: | González, Esteban, Jusufi, Kimet, Leon, Genly, Saridakis, Emmanuel N. |
| Source: | Physics of the Dark Universe 42 (2023) 101304 |
| Publication Year: | 2023 |
| Collection: | Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory |
| Subject Terms: | Astrophysics - Cosmology and Nongalactic Astrophysics, General Relativity and Quantum Cosmology, High Energy Physics - Theory |
| More Details: | We confront Yukawa modified cosmology, proposed in arXiv:2304.11492 [Jusufi et al. arXiv:2304.11492], with data from Supernovae Type Ia (SNe Ia) and Hubble parameter (OHD) observations. Yukawa cosmology is obtained from a Yukawa-like gravitational potential, with coupling parameter $\alpha$ and wavelength parameter $\lambda$, which gives rise to modified Friedmann equations. We show that the agreement with observations is very efficient, and within $1\sigma$ confidence level we find the best-fit parameters $\lambda=\left(2693_{-1262}^{+1191}\right)\, \rm Mpc$, $\alpha=0.416_{-0.326}^{+1.137}$, and a graviton mass of $m_{g}=\left(2.374_{-0.728}^{+2.095}\right)\times 10^{-42}\, \text{GeV}$. Additionally, we establish a connection between the effective dark matter and dark energy density parameters and the angular radius of the black hole shadow of the SgrA and M87 black holes in the low-redshift limit, consistent with the Event Horizon Telescope findings. Comment: 13 pages, 5 figures. Minor changes |
| Document Type: | Working Paper |
| DOI: | 10.1016/j.dark.2023.101304 |
| Access URL: | http://arxiv.org/abs/2305.14305 |
| Accession Number: | edsarx.2305.14305 |
| Database: | arXiv |
| DOI: | 10.1016/j.dark.2023.101304 |
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