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In this talk we will show the cosmological implications of a varying absolute magnitude of Type Ia supernovae using the Pantheon compilation, and we test them by reconstructing different phenomenological approaches that could justify a varying absolute magnitude, but also approaches based on cosmic voids, modified gravity models and a binning scheme. Anticipating the results, we find good agreement with the expected values of the standard LCDM model and no evidence of new physics.

Pour plus d'informations, merci de contacter Lavalle J.