English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We evaluate the potential for current and future cosmic shear measurementsfrom large galaxy surveys to constrain the impact of baryonic physics on thematter power spectrum. We do so using a model-independent parameterization thatdescribes deviations of the matter power spectrum from the dark-matter-onlycase as a set of principal components that are localized in wavenumber andredshift. We perform forecasts for a variety of current and future datasets,and find that at least ~90% of the constraining power of these datasets iscontained in no more than nine principal components. The constraining power ofdifferent surveys can be quantified using a figure of merit defined relative tocurrently available surveys. With this metric, we find that the final DarkEnergy Survey dataset (DES Y5) and the Hyper Suprime Cam Survey will be roughlyan order of magnitude more powerful than existing data in constraining baryoniceffects. Upcoming Stage IV surveys (LSST, Euclid, and WFIRST) will improve uponthis by a further factor of a few. We show that this conclusion is robust tomarginalization over several key systematics. The ultimate power of cosmicshear to constrain galaxy formation is dependent on understanding systematicsin the shear measurements at small (sub-arcminute) scales. If these systematicscan be sufficiently controlled, cosmic shear measurements from DES Y5 and otherfuture surveys have the potential to provide a very clean probe of galaxyformation and to strongly constrain a wide range of predictions from modernhydrodynamical simulations.

Cosmic Shear as a Probe of Galaxy Formation Physics