Is there any measurable redshift dependence on the SN Ia absolute magnitude?

Understand

We test the cosmological implications of a varying absolute magnitude of Type Ia supernovae using the Pantheon compilation, 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.

• In all the cases considered in this work, we find good agreement with the expected values of the standard $\Lambda$CDM model and no evidence of new physics.