Testing the standard cosmological model with the Dark Energy Survey

Jessie Muir (Perimeter Institute)

October 03, 2022

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Abstract: The Dark Energy Survey (DES) is a galaxy survey which imaged one eight of the sky between 2013 and 2019, collecting data on the shapes and locations of more than 200 million galaxies. We use that data to study the large-scale distribution of matter in the Universe, and through that to learn about fundamental physics, such as the nature of the dark energy driving the accelerating expansion of the Universe. This talk will introduce how we use the combined analysis of galaxy clustering and weak lensing to constrain cosmology, and will highlight recently released results from searches for physics beyond the standard cosmological model.