Constraining the properties of gaseous halos via cross-correlations of upcoming galaxy surveys and thermal Sunyaev-Zel'dovich maps

Abstract

The thermal Sunyaev-Zel'dovich (tSZ) effect induces a Compton-$y$ distortion in cosmic microwave background (CMB) temperature maps that is sensitive to a line of sight integral of the ionized gas pressure. By correlating the positions of galaxies with maps of the Compton-$y$ distortion, one can probe baryonic feedback processes and study the thermodynamic properties of a significant fraction of the gas in the Universe. Using a model fitting approach, we forecast how well future galaxy and CMB surveys will be able to measure these correlations, and show that powerful constraints on halo pressure profiles can be obtained. Our forecasts are focused on correlations between galaxies and halos identified by the upcoming Dark Energy Spectroscopic Instrument survey and tSZ maps from the Simons Observatory and CMB-S4 experiments, but have general applicability to other surveys, such as the Large Synoptic Survey Telescope. We include prescriptions for observational systematics, such as halo miscentering and halo mass bias, demonstrating several important degeneracies with pressure profile parameters. Assuming modest priors on these systematics, we find that measurements of halo-$y$ and galaxy-$y$ correlations with future surveys will yield tight constraints on the pressure profiles of group-scale dark matter halos, and enable current feedback models to either be confirmed or ruled out.

18 pages, 10 figures. Comments welcome. Change in the halo mass uncertainty resulting in very minor change in relevant figures, no change to any conclusions

References in corpus (6)

• Galaxy Groups in the SDSS DR4: I. The Catalogue and Basic Properties
• CMB-S4 Science Case, Reference Design, and Project Plan
• Modelling baryonic feedback for survey cosmology
• A Measurement of the Galaxy Group-Thermal Sunyaev-Zel'dovich Effect Cross-Correlation Function
• Herschel/PACS far-IR spectral imaging of a jet from an intermediate mass protostar in the OMC-2 region
• Probing Feedback in Galaxy Formation with Millimeter-wave Observations

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• Shocks in the Stacked Sunyaev-Zel'dovich Profiles of Clusters II: Measurements from SPT-SZ + Planck Compton-y Map
• Baryonic feedback biases on fundamental physics from lensed CMB power spectra
• Inferring the impact of feedback on the matter distribution using the Sunyaev Zel'dovich effect: Insights from CAMELS simulations and ACT+DES data
• Baryonic effects on CMB lensing and neutrino mass constraints
• Avoiding baryonic feedback effects on neutrino mass measurements from CMB lensing
• Tracer-Field Cross-Correlations with $k$-Nearest Neighbor Distributions
• Cosmology from weak lensing, galaxy clustering, CMB lensing and tSZ: I. 10x2pt Modelling Methodology
• The Impacts of Modeling Choices on the Inference of the Circumgalactic Medium Properties from Sunyaev-Zeldovich Observations
• Constraining the galaxy-halo connection of infrared-selected unWISE galaxies with galaxy clustering and galaxy-CMB lensing power spectra
• Cross Correlation between the Thermal Sunyaev-Zel'dovich Effect and Projected Galaxy Density Field
• The thermal and gravitational energy densities in the large-scale structure of the Universe
• Correlations of Dark Matter, Gas and Stellar Profiles in Dark Matter Halos
• The correlation of high-redshift galaxies with the thermal Sunyaev-Zel'dovich effect traces reionization
• Breaking degeneracies with the Sunyaev-Zeldovich full bispectrum