Forecasts on Primordial non-Gaussianity from 21 cm Intensity Mapping experiments

Abstract

We forecast ability of dedicated 21 cm intensity mapping experiments to constraint primordial non-Gaussianity using power spectrum and bispectrum. We model the signal including the non-linear biasing expansion using a generalized halo model approach. We consider the importance of foreground filtering scale and of the foreground wedge. We find that the current generation intensity mapping experiments like CHIME do not posses sufficient sensitivity to be competitive with the existing limits. On the other hand, upcoming experiments like HIRAX can improve the current constraints and the proposed PUMA experiment can substantially improve them, reaching sensitivities below $\sigma (f_{\mathrm{NL}})<5$ for equilateral and orthogonal configurations and $\sigma (f_{\mathrm{NL}})<1$ for the local shape if good foreground control is achieved.

24 pages, 4 figures, minor corrections and references updated. JCAP version

References in corpus (25)

• Cosmology at Low Frequencies: The 21 cm Transition and the High-Redshift Universe
• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• Clustering of dark matter tracers: generalizing bias for the coming era of precision LSS
• Late-time cosmology with 21cm intensity mapping experiments
• Gravity and Large-Scale Non-local Bias
• Effects of Scale-Dependent Non-Gaussianity on Cosmological Structures
• Cosmology and the Bispectrum
• The bispectrum of galaxies from high-redshift galaxy surveys: primordial non-Gaussianity and non-linear galaxy bias
• Primordial non-gaussianity, statistics of collapsed objects, and the Integrated Sachs-Wolfe effect
• A Method for 21cm Power Spectrum Estimation in the Presence of Foregrounds
• HIRAX: A Probe of Dark Energy and Radio Transients
• Primordial non-Gaussianity: large-scale structure signature in the perturbative bias model
• The Tianlai project: a 21cm cosmology experiment
• ELUCID - Exploring the Local Universe with reConstructed Initial Density field I: Hamiltonian Markov Chain Monte Carlo Method with Particle Mesh Dynamics
• The Fast Fourier Transform Telescope
• ELUCID - Exploring the Local Universe with reConstructed Initial Density field III: Constrained Simulation in the SDSS Volume
• Constraints on primordial non-Gaussianity from 800,000 photometric quasars
• Forecasts on the Dark Energy and Primordial Non-Gaussianity Observations with the Tianlai Cylinder Array
• Modeling the neutral hydrogen distribution in the post-reionization Universe: intensity mapping
• Primordial non-Gaussianity in the large scale structure of the Universe
• The Impact of Foregrounds on Redshift Space Distortion Measurements With the Highly-Redshifted 21 cm Line
• Beware of commonly used approximations I: errors in forecasts
• Primordial Non-Gaussianity
• Unveiling the nature of the unidentified gamma-ray sources VI: gamma-ray blazar candidates in the WISH survey and their radio properties
• Impact of Uncertainties in the Cosmological Parameters on the Measurement of Primordial non-Gaussianity

Cited by in corpus (42)

• Line-Intensity Mapping: Theory Review
• Primordial Non-Gaussianity from Biased Tracers: Likelihood Analysis of Real-Space Power Spectrum and Bispectrum
• On the impact of galaxy bias uncertainties on primordial non-Gaussianity constraints
• Primordial non-Gaussianity without tails -- how to measure fNL with the bulk of the density PDF
• Quijote-PNG: Simulations of primordial non-Gaussianity and the information content of the matter field power spectrum and bispectrum
• Bayesian field-level inference of primordial non-Gaussianity using next-generation galaxy surveys
• Detecting the relativistic bispectrum in 21cm intensity maps
• The degeneracy between primordial non-Gaussianity and foregrounds in 21cm intensity mapping experiments
• Fundamental limits on constraining primordial non-Gaussianity
• Responses of Halo Occupation Distributions: a new ingredient in the halo model & the impact on galaxy bias
• Prospects for measuring dark energy with 21 cm intensity mapping experiments: A joint survey strategy
• HInet: Generating neutral hydrogen from dark matter with neural networks
• Local primordial non-Gaussianity in the relativistic galaxy bispectrum
• Cosmological constraints from the power spectrum and bispectrum of 21cm intensity maps
• Prospects for measuring dark energy with 21 cm intensity mapping experiments
• Probing primordial non-Gaussianity with the power spectrum and bispectrum of future 21cm intensity maps
• The HI intensity mapping bispectrum including observational effects
• Primordial non-Gaussianity and non-Gaussian Covariance
• Multi-tracer power spectra and bispectra: Formalism
• The local PNG bias of neutral Hydrogen, ${\mathrm{H}}_{\mathrm{I}}$
• Full-sky bispectrum in redshift space for 21cm intensity maps
• Local Primordial Non-Gaussianities and Super-Sample Variance
• HI intensity mapping with MeerKAT: forecast for delay power spectrum measurement using interferometer mode
• Cuscuton Bounce Beyond the Linear Regime: Bispectrum and Strong Coupling Constraints
• The primordial information content of Rayleigh Anisotropies
• Unveiling the Universe with Emerging Cosmological Probes
• Decoupling Local Primordial non-Gaussianity from Relativistic Effects in the Galaxy Bispectrum
• A Multi-messenger view of Cosmic Dawn: Conquering the Final Frontier
• Contributions from primordial non-Gaussianity and General Relativity to the galaxy power spectrum
• Cosmological constraints from the EFT power spectrum and tree-level bispectrum of 21cm intensity maps
• A wide-angle formulation of foreground filters for HI intensity mapping
• Relativistic matter bispectrum of cosmic structures on the light cone
• Reconstructing the Long-wavelength Matter Density Fluctuation Modes from the Scalar-Type Clustering Fossils
• Relativistic second-order initial conditions for simulations of large-scale structure
• Constraining primordial non-Gaussianity by combining photometric galaxy and 21cm intensity mapping surveys
• Multi-tracing the primordial Universe with future surveys
• Squeezing information from radio surveys to probe the primordial Universe
• Modes of the Dark Ages 21cm field accessible to a lunar radio interferometer
• Multi-wavelength spectroscopic probes: prospects for primordial non-Gaussianity and relativistic effects
• An Overview of CHIME, the Canadian Hydrogen Intensity Mapping Experiment
• Probing the large-scale structure with 21cm-galaxy cross-bispectrum: Estimates from simulations and forecasts for upcoming cosmological surveys
• Constraining the growth rate on linear scales by combining SKAO and DESI surveys