[astroseminar at Sapienza] Seminario di Dan Scolnic Lunedi 13/12/2021 Aula 6 Ore 16

[Alessandro Melchiorri]

Cari tutti,

volevo avvertirvi di questo seminario previsto in presenza per
lunedi prossimo
in Aula 6 presso il nuovo edificio Fermi di Fisica. Saranno presentati i
nuovi risultati sulla costante di Hubble da parte del team SHOES usciti
oggi in rete
(arXiv:2112.04510 <https://arxiv.org/abs/2112.04510>) che mostrano una
tensione a 5 deviazioni standard dai risultati del satellite Planck.


Prof. Dan Scolnic
New Results from the Pantheon+ and SH0ES teams on Measuring the Hubble
Constant

This last week, the Pantheon+ and SH0ES teams released likely their final
major update to the measurement of the Hubble constant, which parameterizes
the current expansion rate of the universe.  The result is in 5sigma
tension with constraints from the Cosmic Microwave Background.  I will
overview the new measurements on the local side, and dive into the multiple
papers released this last week.  I will go over various past challenges to
the local-side measurement and detail how our new analyses have addressed
them.  I will then discuss next steps and challenges.
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