Probing galaxy bias and intergalactic gas pressure with KiDS Galaxies-tSZ-CMB lensing cross-correlations

Abstract

We constrain the redshift dependence of gas pressure bias $⟨b_y{P}_{\mathrm{e}}⟩$ (bias-weighted average electron pressure), which characterises the thermodynamics of intergalactic gas, through a combination of cross-correlations between galaxy positions and the thermal Sunyaev-Zeldovich (tSZ) effect, as well as galaxy positions and the gravitational lensing of the cosmic microwave background (CMB). The galaxy sample is from the fourth data release of the Kilo-Degree Survey (KiDS). The tSZ $y$ map and the CMB lensing map are from the {\textit{Planck}} 2015 and 2018 data releases, respectively. The measurements are performed in five redshift bins with $z\lesssim 1$. With these measurements, combining galaxy-tSZ and galaxy-CMB lensing cross-correlations allows us to break the degeneracy between galaxy bias and gas pressure bias, and hence constrain them simultaneously. In all redshift bins, the best-fit values of $\bpe$ are at a level of $\sim 0.3meV/c{\mathrm{m}}^3$ and increase slightly with redshift. The galaxy bias is consistent with unity in all the redshift bins. Our results are not sensitive to the non-linear details of the cross-correlation, which are smoothed out by the {\textit{Planck}} beam. Our measurements are in agreement with previous measurements as well as with theoretical predictions. We also show that our conclusions are not changed when CMB lensing is replaced by galaxy lensing, which shows the consistency of the two lensing signals despite their radically different redshift ranges. This study demonstrates the feasibility of using CMB lensing to calibrate the galaxy distribution such that the galaxy distribution can be used as a mass proxy without relying on the precise knowledge of the matter distribution.

20 pages, 14 figures, 3 tables, accepted for publication on Astronomy & Astrophysics

References in corpus (21)

• KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics
• KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints
• Halo assembly bias and its effects on galaxy clustering
• The Search for the Missing Baryons at Low Redshift
• The fourth data release of the Kilo-Degree Survey: ugri imaging and nine-band optical-IR photometry over 1000 square degrees
• KiDS-1000 catalogue: Redshift distributions and their calibration
• KiDS-1000 catalogue: Weak gravitational lensing shear measurements
• KiDS-1000 Cosmology: constraints beyond flat $\Lambda$CDM
• Probing Reionization with the 21 cm-Galaxy Cross Power Spectrum
• Anisotropic Magnification Distortion of the 3D Galaxy Correlation: I. Real Space
• Cross-correlation between the CMB lensing potential measured by Planck and high-z sub-mm galaxies detected by the Herschel-ATLAS survey
• A hydrodynamical halo model for weak-lensing cross correlations
• Galaxy clustering in the DESI Legacy Survey and its imprint on the CMB
• Separating intrinsic alignment and galaxy-galaxy lensing
• The Cosmic Thermal History Probed by Sunyaev-Zeldovich Effect Tomography
• Including beyond-linear halo bias in halo models
• Validating a minimal galaxy bias method for cosmological parameter inference using HSC-SDSS mock catalogs
• Cross-correlation of cosmic far-infrared background anisotropies with large scale structures
• Magnification Bias Corrections to Galaxy-Lensing Cross-Correlations
• Probing Cosmology and Cluster Astrophysics with Multi-Wavelength Surveys I. Correlation Statistics
• Predicting the CIB-$\varphi$ contamination in the cross-correlation of the tSZ effect and $\varphi$

Cited by in corpus (16)

• DES Y3 + KiDS-1000: Consistent cosmology combining cosmic shear surveys
• Cosmological constraints from unWISE and Planck CMB lensing tomography
• CCAT-prime Collaboration: Science Goals and Forecasts with Prime-Cam on the Fred Young Submillimeter Telescope
• The growth of density perturbations in the last $\sim$10 billion years from tomographic large-scale structure data
• Joint constraints on cosmology and the impact of baryon feedback: combining KiDS-1000 lensing with the thermal Sunyaev-Zeldovich effect from Planck and ACT
• $Euclid$ preparation: XV. Forecasting cosmological constraints for the $Euclid$ and CMB joint analysis
• Projected-Field Kinetic Sunyaev-Zel'dovich Cross-Correlations: Halo Model and Forecasts
• Mapping gas around massive galaxies: cross-correlation of DES Y3 galaxies and Compton-$y$-maps from SPT and Planck
• Cosmology from weak lensing, galaxy clustering, CMB lensing and tSZ: I. 10x2pt Modelling Methodology
• Cross Correlation between the Thermal Sunyaev-Zel'dovich Effect and Projected Galaxy Density Field
• Testing the SZ-based tomographic approach to the thermal history of the universe with pressure-density cross-correlations: Insights from the Magneticum simulation
• Cosmic star formation history with tomographic cosmic infrared background-galaxy cross-correlation
• Superclustering with the Atacama Cosmology Telescope and Dark Energy Survey: II. Anisotropic large-scale coherence in hot gas, galaxies, and dark matter
• Cosmic Census: Relative Distributions of Dark Matter, Galaxies and Diffuse Gas
• Cross-correlations between X-ray clusters and the general galaxy population
• Cross-correlations between mm-wave line-intensity mapping and weak lensing surveys: preliminary consideration of long-term prospects