Probing Cosmic Origins with CO and [CII] Emission Lines

Abstract

Primordial non-Gaussianity is an invaluable window into the physical processes that gave rise to the cosmological structure. The presence of local shape PNG imprints a distinct scale-dependent correction to the bias of dark matter tracers on large scales, which can be effectively probed via the technique of intensity mapping. Considering an upcoming generation of experiments, we demonstrate that intensity mapping of CO and [CII] emission can improve upon the current best constraints from the {\it Planck} satellite. We show that measurement of the CO intensity power spectrum by a hypothetical next stage of the ground-based COMAP experiment can achieve $\sigma (f_{\mathrm{NL}}^{\mathrm{loc}})=3.4$, and that the proposed CMB satellite mission PIXIE can achieve $\sigma (f_{\mathrm{NL}}^{\mathrm{loc}})=3.9$ via measurement of [CII] intensity power spectrum.

Version 3 matches the published version in APJL

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Cited by in corpus (23)

• Line-Intensity Mapping: Theory Review
• Primordial Non-Gaussianity from Biased Tracers: Likelihood Analysis of Real-Space Power Spectrum and Bispectrum
• A User's Guide to Extracting Cosmological Information from Line-Intensity Maps
• An Intensity Mapping Detection of Aggregate CO Line Emission at 3 mm
• Line intensity mapping with [CII] and CO(1-0) as probes of primordial non-Gaussianity
• The Hunt for Primordial Interactions in the Large Scale Structures of the Universe
• Sensitivity of the Prime-Cam Instrument on the CCAT-prime Telescope
• Astrophysics and Cosmology with Line-Intensity Mapping
• Primordial Non-Gaussianity
• Neutrino Properties with Ground-Based Millimeter-Wavelength Line Intensity Mapping
• Precision Tests of CO and [CII] Power Spectra Models against Simulated Intensity Maps
• Astrophysics & Cosmology from Line Intensity Mapping vs Galaxy Surveys
• Coupling parsec and gigaparsec scales: primordial non-Gaussianity with multi-tracer intensity mapping
• Beyond $\Lambda$CDM with HI intensity mapping: robustness of cosmological constraints in the presence of astrophysics
• Forecasts and Statistical Insights for Line Intensity Mapping Cross-Correlations: A Case Study with 21cm x [CII]
• A partial inventory of observational anisotropies in single-dish line-intensity mapping
• Constraining low redshift [CII] Emission by Cross-Correlating FIRAS and BOSS Data
• Shot noise in multi-tracer constraints on $f_{\text{NL}}$ and relativistic projections: Power Spectrum
• Removing Interlopers From Intensity Mapping Probes Of Primordial Non-Gaussianity
• Boosting Line Intensity Map Signal-to-Noise with the Ly-$\alpha$ Forest Cross-Correlation
• A Forecast for Large Scale Structure Constraints on Horndeski Gravity with Line Intensity Mapping
• Multi-wavelength spectroscopic probes: prospects for primordial non-Gaussianity and relativistic effects
• Probing the warm dark matter mass with [C II] intensity mapping