The Hubble-constant crisis

Valerio Marra

Núcleo de Astrofísica e Cosmologia & Departamento de Física, Universidade Federal do Espírito Santo, Brazil

 INAF – Osservatorio Astronomico di Trieste, Italy.

IFPU – Institute for Fundamental Physics of the Universe, Italy.

 

Abstract:  The determination of the Hubble constant H0 – the present-day expansion rate of the universe – is one of the key goals of cosmology, for it impacts all measurements of cosmological properties. Determinations of H0 from Cosmic Microwave Background observations disagree with local determinations from calibrated supernovas Ia: this tension is now approaching the 5 sigma level. After reviewing the present status of cosmology, I will present recent work on model-independent determinations of H0 and their implications for cosmologies beyond LCDM.

سه شنبه 12 اسفند 1399، ساعت 13:30

Tuesday 2 March 2021 – 13:30 Tehran Time

اتاق سمینار مجازی –Virtual Seminar Room

https://vc.sharif.edu/ch/cosmology

گزینه ورود به صورت مهمان – Enter as a Guest