Coupling parsec and gigaparsec scales: primordial non-Gaussianity with multi-tracer intensity mapping
arXiv:2002.10483 · doi:10.1103/PhysRevD.103.063520
Abstract
Primordial non-Gaussianity (PNG) is a key probe of the origins of primordial fluctuations in the early universe. It has been shown that multi-tracer measurements of large-scale structure can produce high-precision measurements of PNG. Future line intensity mapping surveys are well-suited to these measurements owing to their ability to rapidly survey large volumes and access the large scales at which PNG becomes important. In this paper, we explore for the first time how multi-tracer PNG measurements with intensity mapping surveys depend on the sub-galactic scale physics which drives line emission. We consider an example cross-correlation between CO maps, and quantify the impact varying the astrophysical model has on measurements. We find a non-trivial coupling between horizon-scale PNG measurements and the molecular cloud-scale interstellar medium that can have order unity effects on constraints with near-future experimental sensitivities. We discuss how these effects depend on noise level and survey design. We further find that the cross-correlation shot noise, an effect nearly unique to intensity mapping measurements, can play an important role in multi-tracer analyses and should not be neglected.
arXiv comment16 pages, 6 figures, updated to match version accepted by PRD
References in corpus (82)
- Efficient Computation of CMB anisotropies in closed FRW models
- Non-Gaussian features of primordial fluctuations in single field inflationary models
- Toward a halo mass function for precision cosmology: the limits of universality
- Non-Gaussianity from Inflation: Theory and Observations
- Acoustic Signatures in the Primary Microwave Background Bispectrum
- Cosmology and Fundamental Physics with the Euclid Satellite
- The Large Scale Bias of Dark Matter Halos: Numerical Calibration and Model Tests
- 21-cm cosmology
- The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
- Large-Scale Galaxy Bias
- Single field consistency relation for the 3-point function
- Primordial Non-Gaussianities from Inflation Models
- The Three--Point Correlation Function of the Cosmic Microwave Background in Inflationary Models
- Constraints on local primordial non-Gaussianity from large scale structure
- The effect of primordial non-Gaussianity on halo bias
- Large-scale structure, the cosmic microwave background, and primordial non-gaussianity
- Measuring primordial non-gaussianity without cosmic variance
- Measurement of 21 cm brightness fluctuations at z ~ 0.8 in cross-correlation
- Determination of z~0.8 neutral hydrogen fluctuations using the 21 cm intensity mapping auto-correlation
- How to measure redshift-space distortions without sample variance
- Fossil HII Regions: Self-Limiting Star Formation at High Redshift
- Primordial non-gaussianity, statistics of collapsed objects, and the Integrated Sachs-Wolfe effect
- Intensity Mapping with Carbon Monoxide Emission Lines and the Redshifted 21 cm Line
- The Cosmic Microwave Background Bispectrum and Inflation
- A Method for 21cm Power Spectrum Estimation in the Presence of Foregrounds
- Intensity Mapping of the [CII] Fine Structure Line during the Epoch of Reionization
- Star formation relations and CO SLEDs across the J-ladder and redshift
- Lack of clustering in low-redshift 21-cm intensity maps cross-correlated with 2dF galaxy densities
- Twenty-one centimeter tomography with foregrounds
- Line-Intensity Mapping: 2017 Status Report
- Planck 2018 results. IX. Constraints on primordial non-Gaussianity
- Ultra large-scale cosmology in next-generation experiments with single tracers
- Foregrounds for 21cm Observations of Neutral Gas at High Redshift
- Connecting CO Intensity Mapping to Molecular Gas and Star Formation in the Epoch of Galaxy Assembly
- Optimal Constraints on Local Primordial Non-Gaussianity from the Two-Point Statistics of Large-Scale Structure
- COPSS II: The Molecular Gas Content of Ten Million Cubic Megaparsecs at
- Cosmology on Ultralarge Scales with Intensity Mapping of the Neutral Hydrogen 21 cm Emission: Limits on Primordial Non-Gaussianity
- Why multi-tracer surveys beat cosmic variance
- Intensity Mapping across Cosmic Times with the Lyman-Alpha Line
- On Removing Interloper Contamination from Intensity Mapping Power Spectrum Measurements
- Cross-correlations as a cosmological carbon monoxide detector
- A User's Guide to Extracting Cosmological Information from Line-Intensity Maps
- Carbon Monoxide Intensity Mapping at Moderate Redshifts
- Spectral Line De-confusion in an Intensity Mapping Survey
- Cosmology with intensity mapping techniques using atomic and molecular lines
- Large-scale clustering of Lyman-alpha emission intensity from SDSS/BOSS
- Dissecting the high-z interstellar medium through intensity mapping cross-correlations
- Constraining the evolution of CII intensity through the end stages of reionization
- Constraining the CO intensity mapping power spectrum at intermediate redshifts
- Predictions and sensitivity forecasts for reionization-era [C II] line intensity mapping
- Line intensity mapping with [CII] and CO(1-0) as probes of primordial non-Gaussianity
- A Foreground Masking Strategy for [CII] Intensity Mapping Experiments Using Galaxies Selected by Stellar Mass and Redshift
- Determining the HI content of galaxies via intensity mapping cross-correlations
- Primordial Non-Gaussianity
- A Self-consistent Framework for Multiline Modeling in Line Intensity Mapping Experiments
- Intensity mapping of H-alpha, H-beta, [OII] and [OIII] lines at z<5
- Large Scale Structure
- Measuring Galaxy Clustering and the Evolution of [CII] Mean Intensity with far-IR Line Intensity Mapping During 0.5 < z < 1.5
- Astrophysics and Cosmology with Line-Intensity Mapping
- Evidence for CII diffuse line emission at redshift
- Cross-correlating Carbon Monoxide Line-intensity Maps with Spectroscopic and Photometric Galaxy Surveys
- Probing primordial non-Gaussianity via iSW measurements with SKA continuum surveys
- Looking for Population III stars with He II line intensity mapping
- Probing the Intergalactic Medium with Ly and 21 cm Fluctuations
- Forecasting [C II] line-intensity mapping measurements between the end of reionization and the epoch of galaxy assembly
- Intensity mapping cross-correlations II: HI halo models including shot noise
- Observing AGN feedback with CO intensity mapping
- Studying high-z galaxies with [CII] intensity mapping
- Synergies between intensity maps of hydrogen lines
- Tomographic Intensity Mapping versus Galaxy Surveys: Observing the Universe in H-alpha emission with new generation instruments
- The Experiment for Cryogenic Large-aperture Intensity Mapping (EXCLAIM)
- Measuring the EoR Power Spectrum Without Measuring the EoR Power Spectrum
- Probing high-redshift galaxies with Ly intensity mapping
- Probing Cosmic Origins with CO and [CII] Emission Lines
- Feeding cosmic star formation: Exploring high-redshift molecular gas with CO intensity mapping
- High-Contrast Testbeds for Future Space-Based Direct Imaging Exoplanet Missions
- A Halo Model Approach to the and Cross-correlation
- Tracing the cosmological evolution of stars and cold gas with CMB spectral surveys
- Beyond CDM with HI intensity mapping: robustness of cosmological constraints in the presence of astrophysics
- A partial inventory of observational anisotropies in single-dish line-intensity mapping
- On estimation of contamination from hydrogen cyanide in carbon monoxide line intensity mapping
- Extracting the Global Signal from 21-cm Fluctuations: the Multi-Tracer Approach
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- Line-Intensity Mapping: Theory Review
- Primordial Non-Gaussianity from Biased Tracers: Likelihood Analysis of Real-Space Power Spectrum and Bispectrum
- Neutrino Properties with Ground-Based Millimeter-Wavelength Line Intensity Mapping
- Precision Tests of CO and [CII] Power Spectra Models against Simulated Intensity Maps
- COMAP Early Science: VII. Prospects for CO Intensity Mapping at Reionization
- Intensity mapping from the sky: synergizing the joint potential of [OIII] and [CII] surveys at reionization
- The Effective Field Theory of Large-Scale Structure and Multi-tracer
- Constraining primordial non-Gaussianity by combining next-generation galaxy and 21 cm intensity mapping surveys
- Density reconstruction from biased tracers and its application to primordial non-Gaussianity
- The local PNG bias of neutral Hydrogen,
- Synergizing 21 cm and sub-millimetre surveys during reionization: new empirical insights
- Intensity Mapping without Cosmic Variance
- Cosmological Constraints on the Global Star Formation Law of Galaxies: Insights From Baryon Acoustic Oscillation Intensity Mapping
- Mapping the Universe in HD
- Removing Interlopers From Intensity Mapping Probes Of Primordial Non-Gaussianity
- A Multi-messenger view of Cosmic Dawn: Conquering the Final Frontier
- Constraining the halo-ISM connection through multi-transition carbon monoxide line-intensity mapping
- A Beginner's Guide to Line Intensity Mapping Power Spectra