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- W2996484877 abstract "We quantify the evidence for cosmic acceleration using simulations of $H(z)$ measurements from SKA- and Euclid-like surveys. We perform a non-parametric reconstruction of the Hubble parameters and its derivative to obtain the deceleration parameter $q(z)$ using the Gaussian Processes method. This is a completely model-independent approach, so we can determine whether the Universe is undergoing accelerated expansion {it regardless} of any assumption of a dark energy model. We find that Euclid-like and SKA-like band 1 surveys can probe cosmic acceleration at over $3$ and $5sigma$ confidence level, respectively. By combining them with a SKA-like band 2 survey, which reaches lower redshift ranges, the evidence for a current accelerated phase increases to over $7sigma$. This is a significant improvement from current $H(z)$ measurements from cosmic chronometers and galaxy redshift surveys, showing that these surveys can underpin cosmic acceleration in a model-independent way." @default.
- W2996484877 created "2019-12-26" @default.
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- W2996484877 date "2020-03-13" @default.
- W2996484877 modified "2023-09-30" @default.
- W2996484877 title "Evidence for cosmic acceleration with next-generation surveys: a model-independent approach" @default.
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- W2996484877 doi "https://doi.org/10.1093/mnrasl/slaa040" @default.
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