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

Hot, ionized gas leaves an imprint on the cosmic microwave background via thethermal Sunyaev Zel'dovich (tSZ) effect. The cross-correlation of gravitationallensing (which traces the projected mass) with the tSZ effect (which traces theprojected gas pressure) is a powerful probe of the thermal state of ionizedbaryons throughout the Universe, and is sensitive to effects such as baryonicfeedback. In a companion paper (Gatti et al. 2021), we present tomographicmeasurements and validation tests of the cross-correlation between galaxy shearmeasurements from the first three years of observations of the Dark EnergySurvey, and tSZ measurements from a combination of Atacama Cosmology Telescopeand ${\it Planck}$ observations. In this work, we use the same measurements toconstrain models for the pressure profiles of halos across a wide range of halomass and redshift. We find evidence for reduced pressure in low mass halos,consistent with predictions for the effects of feedback from active galacticnuclei. We infer the hydrostatic mass bias ($B \equiv M_{500c}/M_{\rm SZ}$)from our measurements, finding $B = 1.8\pm0.1$ when adopting the ${\itPlanck}$-preferred cosmological parameters. We additionally find that ourmeasurements are consistent with a non-zero redshift evolution of $B$, with thecorrect sign and sufficient magnitude to explain the mass bias necessary toreconcile cluster count measurements with the ${\it Planck}$-preferredcosmology. Our analysis introduces a model for the impact of intrinsicalignments (IA) of galaxy shapes on the shear-tSZ correlation. We show that IAcan have a significant impact on these correlations at current noise levels.

Cross-correlation of DES Y3 lensing and ACT/${\it Planck}$ thermal Sunyaev Zel'dovich Effect II: Modeling and constraints on halo pressure profiles