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Scalar field dark energy: insights into cosmological evolution and black hole accretion

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dc.contributor.author Koussour, M.
dc.contributor.author Sekhmani, Y.
dc.contributor.author Alfedeel, Alnadhief H. A.
dc.contributor.author Awad, F.
dc.contributor.author Myrzakulov, N.
dc.date.accessioned 2024-09-17T07:37:13Z
dc.date.available 2024-09-17T07:37:13Z
dc.date.issued 2023
dc.identifier.citation Koussour, M., Sekhmani, Y., Alfedeel, A.H.A. et al. Scalar field dark energy: insights into cosmological evolution and black hole accretion. Eur. Phys. J. Plus 138, 1030 (2023). https://doi.org/10.1140/epjp/s13360-023-04666-y ru
dc.identifier.issn 2190-5444
dc.identifier.other doi.org/10.1140/epjp/s13360-023-04666-y
dc.identifier.uri http://rep.enu.kz/handle/enu/16468
dc.description.abstract We propose a novel approach to parameterize the equation of state for Scalar Field Dark Energy (SFDE) and use it to derive analytical solutions for various cosmological parameters. Using statistical MCMC with Bayesian techniques, we obtain constraint values for the model parameters and analyze three observational datasets. We find a quintessence-like behavior for Dark Energy (DE) with positive values for both model parameters α and β. Our analysis of the CC+BAO+SNe datasets reveals that the transition redshift and the current value of the deceleration parameter are ztr 0.73+0.03 −0.01 and q0 −0.44+0.03 −0.02, respectively. We also investigate the fluid flow of accretion SFDE around a Black Hole (BH) and analyze the nature of the BH’s dynamical mass during accretion, taking into account Hawking radiation and BH evaporation. Our proposed model offers insight into the nature of DE in the Universe and the behavior of BHs during accretion. ru
dc.language.iso en ru
dc.publisher The European Physical Journal Plus ru
dc.relation.ispartofseries Volume 138,;article number 1030
dc.title Scalar field dark energy: insights into cosmological evolution and black hole accretion ru
dc.type Article ru


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