The Cosmological Hubble Constant tension

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• Antony Lewis - U. Sussex
• Wednesday 10 November 2021, 16:00-17:00
• Zoom - check your email.

If you have a question about this talk, please contact Amaury Triaud.

The Hubble parameter, the expansion rate of the universe, has now been measured accurately by several distinct methods. Assuming a standard Lambda-ColdDarkMatter cosmology, these turn out to be inconsistent at up to 5 sigma leading to a “Hubble tension”. I will review how cosmic microwave background, large-scale structure, lensing, supernovae and local measurements can be used to determine the Hubble parameter within the context of the standard model, and assess some of the various suggested ways in which the problem might be resolved, either through new physics, new observations or problems with current analyses.

This talk is part of the Physics and Astronomy Colloquia series.

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• Bham Talks
• Physics and Astronomy Colloquia
• What's on in Physics?
• Zoom - check your email

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