Projected-Field Kinetic Sunyaev-Zel'dovich Cross-Correlations: Halo Model and Forecasts

Abstract

The kinetic Sunyaev-Zel'dovich (kSZ) effect, i.e., the Doppler boost of cosmic microwave background (CMB) photons caused by their scattering off free electrons in galaxy clusters and groups with non-zero bulk velocity, is a powerful window on baryons in the universe. We present the first halo-model computation of the cross-power spectrum of the ``projected-field'' kSZ signal with large-scale structure (LSS) tracers. We compare and validate our calculations against previous studies, which relied on $N$-body-calibrated effective formulas rather than the halo model. We forecast results for CMB maps from the Atacama Cosmology Telescope (AdvACT), Simons Observatory (SO), and CMB-S4, and LSS survey data from the Dark Energy Survey, the Vera C.~Rubin Observatory (VRO), and \textit{Euclid}. In cross-correlation with galaxy number density, for AdvACT $\times$ \textit{unWISE} we forecast an 18$\sigma$ projected-field kSZ detection using data already in hand. Combining SO CMB maps and \textit{unWISE} galaxy catalogs, we expect a $62\sigma$ detection, yielding precise measurements of the gas density profile radial slopes. Additionally, we forecast first detections of the kSZ -- galaxy weak lensing cross-correlation with AdvACT $\times$ VRO/\textit{Euclid} (at 6$\sigma$) and of the kSZ -- CMB weak lensing cross-correlation with SO (at 16$\sigma$). Finally, $\approx 10-20$\% precision measurements of the shape of the gas density profile should be possible with CMB-S4 kSZ -- CMB lensing cross-correlation without using any external datasets.

References in corpus (23)

• Galaxy Evolution from Halo Occupation Distribution Modeling of DEEP2 and SDSS Galaxy Clustering
• The Cosmic Linear Anisotropy Solving System (CLASS) I: Overview
• The unWISE Catalog: Two Billion Infrared Sources from Five Years of WISE Imaging
• Detection of Gravitational Lensing in the Cosmic Microwave Background
• A non-linear solution to the $S_8$ tension?
• Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with BOSS DR11 and the Atacama Cosmology Telescope
• The Tau of Galaxy Clusters
• Matched filter optimization of kSZ measurements with a reconstructed cosmological flow field
• A Future Test of Gravitation Using Galaxy Cluster Velocities
• The Effective Halo Model: Creating a Physical and Accurate Model of the Matter Power Spectrum and Cluster Counts
• Constraining cosmology with a new all-sky Compton parameter map from the Planck PR4 data
• Comparing halo bias from abundance and clustering
• Finding the Missing Baryons Using CMB as a Backlight
• Baryon Pasting Algorithm: Halo-based and Particle-based Pasting Methods
• The 21 cm-kSZ-kSZ Bispectrum during the Epoch of Reionization
• Retrieving cosmological information from small-scale CMB foregrounds II. The kinetic Sunyaev Zel'dovich effect
• Patchy Kinetic Sunyaev-Zel'dovich Effect with Controlled Reionization History and Morphology
• Constraining the galaxy-halo connection of infrared-selected unWISE galaxies with galaxy clustering and galaxy-CMB lensing power spectra
• Prospects for kSZ${}^2$-Galaxy Cross-Correlations during Reionization
• Probing Feedback in Galaxy Formation with Millimeter-wave Observations
• An exploration of the properties of cluster profiles for the thermal and kinetic Sunyaev-Zel'dovich effects
• Probing the circumgalactic medium with CMB polarization statistical anisotropy
• Maximum likelihood kinetic Sunyaev Zel'dovich velocity reconstruction

Cited by in corpus (16)

• Euclid. I. Overview of the Euclid mission
• The Atacama Cosmology Telescope: DR6 Gravitational Lensing Map and Cosmological Parameters
• The halo model for cosmology: a pedagogical review
• Backlighting extended gas halos around luminous red galaxies: kinematic Sunyaev-Zel'dovich effect from DESI Y1 x ACT
• The Kinematic Sunyaev-Zel'dovich Effect with ACT, DES, and BOSS: a Novel Hybrid Estimator
• Galaxy cluster rotation revealed in the MACSIS simulations with the kinetic Sunyaev-Zeldovich effect
• Pairwise kSZ signal extraction efficacy and optical depth estimation
• Revisiting the large-scale CMB anomalies: The impact of the SZ signal from the Local Universe
• Improved Modeling of the Kinematic Sunyaev-Zel'dovich Projected-Fields signal and its Cosmological Dependence
• Constraining cosmology with thermal Sunyaev-Zel'dovich maps: Minkowski functionals, peaks, minima, and moments
• kSZ Pairwise Velocity Reconstruction with Machine Learning
• A Novel Bispectrum Estimator of the Kinematic Sunyaev-Zel'dovich Effect using Projected Fields
• Disentangling the Halo: Joint Model for Measurements of the Kinetic Sunyaev-Zeldovich Effect and Galaxy-Galaxy Lensing
• Cross-correlating the patchy screening and kinetic Sunyaev-Zel'dovich effects as a new probe of reionization
• Cluster optical depth and pairwise velocity estimation using machine learning
• LiteBIRD science goals and forecasts: improved full-sky reconstruction of the gravitational lensing potential through the combination of Planck and LiteBIRD data