This is a high-level research talk designed for professional astronomers. It is part of the Caltech Astronomy TAPIR seminar series, roughly hour-long presentations given by top scientists from around the world to the members of our department. All are welcome to watch these presentations; however, for talks specifically designed for the general public, please see our Caltech Astro Outreach channel: [ Ссылка ]

Date: 10/16/2024
Speaker: Elisabeth Krause, Associate Professor, Department of Astronomy, University of Arizona
Title: Large-Scale Structure Cosmology: Opportunities in the Systematics-Limited Regime
Abstract:
Over the next decade, large galaxy surveys will map billions of galaxies and probe cosmic structure formation with high statistical precision. This talk will outline opportunities and challenges of cosmological analyses in the presence of complex systematic effects using recent results from the Dark Energy Survey as pathfinder examples. In particular, I will describe different cosmological probes measured from photometric data and summarize the recent progress on combining galaxy clustering, weak lensing, cluster clustering and cluster abundances, as well as constraints on baryons and galaxy biasing from small scales. I will conclude with an outlook on cosmology analysis plans and challenges for future, much larger experiments such as Rubin Observatory's LSST, Roman Space Telescope and overlapping Cosmic Microwave Background surveys.

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