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It has been intensively discussed if modifications in the dynamics of the Universe at late times are able or not able to solve the H₀ tension. On the other hand, it has also been argued that the H₀ tension is actually a tension on the supernova absolute magnitude M₁. In this work, we robustly constrain M₁ using Pantheon supernovae Ia sample, baryon acoustic oscillations, and big bang nucleosynthesis data, and assess the M₁ tension by comparing three theoretical models, namely the standard, the wCDM, and a nongravitational interaction between dark energy (IDE) and dark matter. We find that the IDE model can solve the M₁ tension with a coupling different from zero at 95% CL, confirming the results obtained using a H₀ prior.
Nunes et al. (Wed,) studied this question.