NGC 3972, which is a galaxy 66 million light years away in Ursa Major, was one of the 10 galaxies used to measure the expansion of the universe in a new study. (Image credit: Yuval Harpaz, data via JWST)

241113.TheHubbleTensionInLightOf-JWST

NGC 3972, which is a galaxy 66 million light years away in Ursa Major, was one of the 10 galaxies used to measure the expansion of the universe in a new study. (Image credit: Yuval Harpaz, data via JWST)

Lucas Macrì

US Extremely Large Telescope Program, NSF NOIRLab

Wednesday November 13, 2024, H 11.00 AM – Villa Magliola Seminars room – INAF-OATo

LIVE STREAMING

Abstract

There is an intriguing ~6 sigma discrepancy between direct measurements of the Hubble constant in the local Universe and predictions of its value based on observations of the early Universe and the Lambda-CDM model.

I will review the various techniques used to make these measurements, present recent results based on observations from JWST, and discuss possible solutions to this “Hubble Tension”.

Local contact: Mariateresa Crosta