Intensity mapping from the sky: synergizing the joint potential of [OIII] and [CII] surveys at reionization

Abstract

We forecast the ability of future-generation experiments to detect the fine-structure lines of the carbon and oxygen ions, [CII] and [OIII] in intensity mapping (IM) from the Epoch of Reionization ($z\sim 6-8$). Combining the latest empirically derived constraints relating the luminosity of the [OIII] line to the ambient star-formation rate, and using them in conjunction with previously derived estimates for the abundance of [CII] in haloes, we predict the expected auto-correlation IM signal to be observed using new experiments based on the Fred Young Submillimetre Telescope (FYST) and the balloon-borne facility, Experiment for Cryogenic Large-Aperture Intensity Mapping (EXCLAIM) over $z\sim 5.3-7$. We describe how improvements to both the ground-based and balloon-based surveys in the future will enable a cross-correlation signal to be detected at $\sim$ 10-30 $\sigma$ over $z\sim 5.3-7$. Finally, we propose a space-based mission targeting the [OIII] 88 and 52 $\mu$m lines along with the [CII] 158 $\mu$m line, configured to enhance the signal-to-noise ratio of cross-correlation measurements. We find that such a configuration can achieve a high-significance detection (hundreds of $\sigma$) in both auto- and cross-correlation modes.

11 pages, 7 figures, 2 tables; accepted for publication in MNRAS

References in corpus (13)

• Measurement of 21 cm brightness fluctuations at z ~ 0.8 in cross-correlation
• Dust in the reionization era: ALMA observations of a $z$=8.38 Galaxy
• Testing General Relativity with 21 cm intensity mapping
• Intensity mapping of [CII] from early galaxies
• The Absence of [CII] 158$\mu$m Emission in Spectroscopically-Confirmed Galaxies at $z>8$
• An Intensity Mapping Detection of Aggregate CO Line Emission at 3 mm
• The Atacama Large Aperture Submillimetre Telescope (AtLAST)
• Probing the primordial Universe with MeerKAT and DES
• An analytic model for OIII fine structure emission from high redshift galaxies
• The Experiment for Cryogenic Large-aperture Intensity Mapping (EXCLAIM)
• Detecting the radiative decay of the cosmic neutrino background with line-intensity mapping
• The ALMA Spectroscopic Survey in the HUDF: Constraining cumulative CO emission at $1\lesssim z\lesssim 4$ with power spectrum analysis of ASPECS LP data from 84 to 115 GHz
• The prospects for observing [OIII] 52 micron emission from galaxies during the Epoch of Reionization

Cited by in corpus (17)

• CCAT-prime Collaboration: Science Goals and Forecasts with Prime-Cam on the Fred Young Submillimeter Telescope
• COMAP Early Science: VII. Prospects for CO Intensity Mapping at Reionization
• LIMFAST. II. Line Intensity Mapping as a Probe of High-Redshift Galaxy Formation
• LIMFAST. I. A Semi-Numerical Tool for Line Intensity Mapping
• Forecasts and Statistical Insights for Line Intensity Mapping Cross-Correlations: A Case Study with 21cm x [CII]
• Synergizing 21 cm and sub-millimetre surveys during reionization: new empirical insights
• CONCERTO: Extracting the power spectrum of the [C II ] emission line
• Infrared fine-structure lines at high redshift
• A Multi-messenger view of Cosmic Dawn: Conquering the Final Frontier
• A Forecast for Large Scale Structure Constraints on Horndeski Gravity with Line Intensity Mapping
• A statistical framework for recovering intensity mapping autocorrelations from crosscorrelations
• Leveraging cross-correlations and linear covariance-based filtering for line-intensity map reconstructions at linear scales
• oLIMpus: An Effective Model for Line Intensity Mapping Auto- and Cross- Power Spectra in Cosmic Dawn and Reionization
• Constraining the halo-ISM connection through multi-transition carbon monoxide line-intensity mapping
• Constraining the [CII] luminosity function from the power spectrum of line-intensity maps at redshift 3.6
• Unveiling the evolution of the CO excitation ladder through cross-correlation of CONCERTO-like experiments and galaxy redshift surveys
• Nearest Neighbour-Based Statistics for 21cm-Galaxy Cross-Correlations in the Epoch of Reionization