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Cosmological simulations with GLASS

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If you have a question about this talk, please contact Louis Legrand .

I will present the GLASS software, which is a framework for carrying out useful simulations for cosmology. GLASS simulations take onion-like shells of matter density and add subsequent physical effects (such as weak lensing) or observational effects (such as spatially varying survey depth) by forward-modelling. The source of the initial matter density can be simple lognormal random fields or large N-body simulations. I will discuss how we go from there to realistic simulated Stage-IV galaxy surveys such as Euclid or LSST , highlight some of the open questions, and show how this approach enables new ways to do cosmology with Simulation-Based Inference.

This talk is part of the Cosmology Lunch series.

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Cambridge Hub events Mondays (unless otherwise stated), 13.05 – 14.00 in the Kenneth Craik Room ( Craik Marshall Building, Downing Site Lecture Room 3, Department of Chemical Engineering & Biotechnology, Philippa Fawcett Drive, Cambridge CB3 0AS

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