Looking at the dark side: weak lensing by large scale structure

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• Henk Hoekstra (Leiden)
• Wednesday 06 February 2013, 14:00-15:00
• Nuffield G13.

If you have a question about this talk, please contact Ilya Mandel.

Intervening structures in the universe give rise to small distortions in the shapes of distant galaxies. By measuring this tiny coherent signal, we can study the mass distribution in the universe directly, without relying on baryonic tracers. This makes weak lensing by large-scale structures a powerful probe of cosmology. It allows us to differentiate between dark energy models or modifications of the law of gravity. I will briefly review the topic of cosmic shear and discuss how the signal is extracted from the data and present some results from the recently completed analysis of the CFHT Legacy Survey (CFHTLenS).

This talk is part of the Astrophysics Seminars series.

This talk is included in these lists:

• Astrophysics Seminars
• Bham Talks
• Nuffield G13
• What's on in Physics?

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