On the use of the local prior on the absolute magnitude of Type Ia supernovae in cosmological inference

  title={On the use of the local prior on the absolute magnitude of Type Ia supernovae in cosmological inference},
  author={David Camarena and Valerio Marra},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
  • D. Camarena, V. Marra
  • Published 21 January 2021
  • Physics
  • arXiv: Cosmology and Nongalactic Astrophysics
A dark-energy which behaves as the cosmological constant until a sudden phantom transition at very-low redshift ($z 4$\sigma$ disagreement between the local and high-redshift determinations of the Hubble constant, while maintaining the phenomenological success of the $\Lambda$CDM model with respect to the other observables. Here, we show that such a hockey-stick dark energy cannot solve the $H_0$ crisis. The basic reason is that the supernova absolute magnitude $M_B$ that is used to derive the… 

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