Reconstructing large scales at cosmic dawn

Abstract

The cosmic microwave background (CMB) serves as a backlight to large-scale structure during the epoch of reionization, where Thomson scattering gives rise to temperature anisotropies on small angular scales from the kinetic Sunyaev Zel'dovich (kSZ) effect. In this paper, we demonstrate that the technique of kSZ tomography (velocity reconstruction), based on cross correlations between CMB temperature and 21cm surveys, can significantly improve constraints on models of inhomogeneous reionization and provide information about large-scale modes that are poorly characterized by 21cm measurements themselves due to foreground contamination.

arXiv comment5+1 pages, comments welcome

References in corpus (47)

• Halo Models of Large Scale Structure
• The Simons Observatory: Science goals and forecasts
• Hydrogen Epoch of Reionization Array (HERA)
• The Growth of HII Regions During Reionization
• Cosmological Parameter Estimation Using 21 cm Radiation from the Epoch of Reionization
• 21 Centimeter Fluctuations from Cosmic Gas at High Redshifts
• Simulations and Analytic Calculations of Bubble Growth During Hydrogen Reionization
• Cosmology with Phase 1 of the Square Kilometre Array; Red Book 2018: Technical specifications and performance forecasts
• The Baryon Acoustic Oscillation Broadband and Broad-beam Array: Design Overview and Sensitivity Forecasts
• Inflation and the Scale Dependent Spectral Index: Prospects and Strategies
• The Kinetic Sunyaev-Zel'dovich Effect from Reionization
• Eliminating the optical depth nuisance from the CMB with 21 cm cosmology
• Reconstructing Patchy Reionization from the Cosmic Microwave Background
• Constraining local non-Gaussianities with kSZ tomography
• The Kinetic Sunyaev-Zel'dovich Effect from Radiative Transfer Simulations of Patchy Reionization
• Precision era of the kinetic Sunyaev-Zeldovich effect: simulations, analytical models and observations and the power to constrain reionization
• Reconstruction of the remote dipole and quadrupole fields from the kinetic Sunyaev Zel'dovich and polarized Sunyaev Zel'dovich effects
• Detecting patchy reionization in the CMB
• Constraining massive neutrinos using cosmological 21 cm observations
• Forecasted 21 cm constraints on compensated isocurvature perturbations
• The Cosmic Reionization History as Revealed by the CMB Doppler--21-cm Correlation
• B-mode CMB Polarization from Patchy Screening during Reionization
• Spherical Harmonic Analyses of Intensity Mapping Power Spectra
• The Kinetic Sunyaev-Zel'dovich Effect from Reionization: Simulated Full Sky Maps at Arcminute Resolution
• Recovering the Wedge Modes Lost to 21-cm Foregrounds
• Reionization History from Coupled CMB/21cm Line Data
• Redshift space 21 cm power spectra from reionization
• Characterizing the Epoch of Reionization with the small-scale CMB: constraints on the optical depth and physical parameters
• Mitigating the optical depth degeneracy using the kinematic Sunyaev-Zel'dovich effect with CMB-S4
• Secondary CMB anisotropies from the kinetic SZ effect
• Cross-Correlation Studies between CMB Temperature Anisotropies and 21 cm Fluctuations
• Towards testing CMB anomalies using the kinetic and polarized Sunyaev Zel'dovich effects
• Analyzing the cosmic variance limit of remote dipole measurements of the cosmic microwave background using the large-scale kinetic Sunyaev Zel'dovich effect
• Probing correlated compensated isocurvature perturbations using scale-dependent galaxy bias
• Reionization and the large-scale 21 cm-cosmic microwave background cross correlation
• Cross-correlation Study between the Cosmological 21-cm Signal and the kinetic Sunyaev-Zel'dovich effect
• Measuring patchy reionisation with kSZ${}^2$-21 cm correlations
• The dark flow induced small scale kinetic Sunyaev Zel'dovich effect
• The 21 cm-kSZ-kSZ Bispectrum during the Epoch of Reionization
• The Impact of baryonic physics on the kinetic Sunyaev-Zel'dovich Effect
• Forecasted constraints on modified gravity from Sunyaev Zel'dovich tomography
• Kinetic Sunyaev-Zel'dovich tomography with line-intensity mapping
• Towards detection of relativistic effects in galaxy number counts using kSZ Tomography
• The Cross-correlation of KSZ Effect and 21 cm Intensity Mapping with Tidal Reconstruction
• The effect of reionization on the CMB-density correlation
• Detectability of the 21 cm-CMB cross-correlation from the EoR
• Reconstructing CMB fluctuations and the mean reionization optical depth

Cited by in corpus (17)

• The Benefits of CMB Delensing
• Cosmology with the moving lens effect
• Probing cosmic birefringence with polarized Sunyaev-Zel'dovich tomography
• Retrieving cosmological information from small-scale CMB foregrounds II. The kinetic Sunyaev Zel'dovich effect
• Velocity reconstruction with the cosmic microwave background and galaxy surveys
• Reconstructing Patchy Reionization with Deep Learning
• Cosmology from the kinetic polarized Sunyaev Zel'dovich effect
• Subtracting the kinetic Sunyaev-Zeldovich effect from the cosmic microwave background with surveys of large-scale structure
• Probing helium reionization with kinetic Sunyaev Zel'dovich tomography
• Transverse velocities and matter gradient correlations: a new signal and a new challenge to moving-lens analyses
• Cosmological probes of helium reionization
• Reconstructing patchy helium reionization using the cosmic microwave background and large-scale structure
• Maximum likelihood kinetic Sunyaev Zel'dovich velocity reconstruction
• Cross-correlating the patchy screening and kinetic Sunyaev-Zel'dovich effects as a new probe of reionization
• Clustering redshifts with the 21cm-galaxy cross-bispectrum
• A Novel kinetic Sunyaev-Zel'dovich Estimator for Electron-Electron Correlations
• Squared-field cross-correlation between kinetic Sunyaev-Zel'dovich effect and 21-cm intensity mapping