Fig. 4.
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Top panel: Hubble diagram of the Pantheon+ supernovae sample, fitted with an open ΛCDM model with ΩM and ΩΛ as free parameters, and with a ΛCDM model with fixed ΩM = 1 and ΩΛ = 0 and allowing for a redshift evolution of the absolute zero-point magnitude of supernovae. Bottom panels: Dispersion with respect to the best fit for the two models.
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