We use a combination of Planck cosmic microwave background (CMB) anisotropy data and non-CMB data that include Pantheon+ type Ia supernovae, Hubble parameter [$H(z)$], growth factor (fσ₈) measurements, and a collection of baryon acoustic oscillation (BAO) data, but not recent DESI 2024 BAO measurements, to confirm the DESI 2024 (DESI+CMB+PantheonPlus) data compilation support for dynamical dark energy with an evolving equation of state parameter w(z) = w₀ + wₐ z/(1+z). From our joint compilation of CMB and non-CMB data, in a spatially-flat cosmological model, we obtain w₀ = -0.850 ± 0.059 and wₐ = -0.59+0.26-0.22 and find that this dynamical dark energy is favored over a cosmological constant by ~ 2σ. Our data constraints on the flat w₀wₐCDM model are slightly more restrictive than the DESI 2024 constraints, with the DESI 2024 and our values of w₀ and wₐ differing by -0.27σ and 0.44σ, respectively. Our data compilation slightly more strongly favors the flat w₀wₐCDM model over the flat ΛCDM model than does the DESI 2024 data compilation.
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Park et al. (2024) studied this question.
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