Synergizing 21 cm and sub-millimetre surveys during reionization: new empirical insights

Abstract

We use the latest results from Atacama Large Millimetre/submillimetre Array (ALMA) surveys targeting the ionized carbon [CII] 158 $\mu$m and oxygen [OIII] 88 $\mu$m lines, in combination with data-driven predictions for the evolution of neutral hydrogen (HI), to illustrate the prospects for intensity mapping cross-correlations between 21 cm and submillimetre surveys over $z\sim 5-7$. We work with a dataset including the ALPINE and REBELS surveys for [CII] over $z\sim 4.5-7$, and ALMA [OIII] detections over $z\sim 6-9$. The resultant evolution of the [CII] luminosity - halo mass relation is well described by a double power law at high redshifts, with the best-fitting parameters in good agreement with the results of simulations. The data favour secure detections of the auto-power spectrum of [CII] at all redshifts with an enhanced Fred Young Submillimetre Telescope (FYST)-like configuration. Such an experiment, along with the Murchinson Widefield Array (MWA) will be able to measure the 21 cm - [CII] cross-correlation power with a signal-to-noise ratio of a few tens to a few hundreds. We find that a balloon-borne experiment improving upon the Experiment for Cryogenic Large-Aperture Intensity Mapping (EXCLAIM) should be able to detect the 21 cm - [OIII] cross-correlation with the MWA and the Square Kilometre Array (SKA)-LOW out to $z\sim 7$. Our results have implications for constraining the evolution of luminous sources during the mid-to-end stages of reionization.

13 pages, 7 figures, 3 tables; version accepted for publication in MNRAS

References in corpus (31)

• Late-time cosmology with 21cm intensity mapping experiments
• Dust in the reionization era: ALMA observations of a $z$=8.38 Galaxy
• The Cosmic Baryon and Metal Cycles
• 21 cm fluctuations from inhomogeneous X-ray heating before reionization
• Reionization Era Bright Emission Line Survey: Selection and Characterization of Luminous Interstellar Medium Reservoirs in the z>6.5 Universe
• Constraining the neutral fraction of hydrogen in the IGM at redshift 7.5
• Detecting the Rise and Fall of 21 cm Fluctuations with the Murchison Widefield Array
• HERA Phase I Limits on the Cosmic 21-cm Signal: Constraints on Astrophysics and Cosmology During the Epoch of Reionization
• Probing Reionization with the 21 cm-Galaxy Cross Power Spectrum
• ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Search for [CII] line and dust emission in 6<z<8 galaxies
• Line-Intensity Mapping: Theory Review
• Intensity mapping of [CII] from early galaxies
• Significant Dust-Obscured Star Formation in Luminous Lyman-break Galaxies at $z$$\sim$$7$$-$$8$
• Dissecting the high-z interstellar medium through intensity mapping cross-correlations
• The Cross-Correlation of High-Redshift 21 cm and Galaxy Surveys
• Intensity mapping of H-alpha, H-beta, [OII] and [OIII] lines at z<5
• The correlation between the distribution of galaxies and 21cm emission at high redshifts
• The ALMA REBELS Survey: The Cosmic HI Gas Mass Density in Galaxies at $z\approx 7$
• The Local [CII] 158 um Emission Line Luminosity Function
• COMAP Early Science: V. Constraints and Forecasts at $z\sim 3$
• Science with the Murchison Widefield Array: Phase I Results and Phase II Opportunities
• An analytic model for OIII fine structure emission from high redshift galaxies
• The Experiment for Cryogenic Large-aperture Intensity Mapping (EXCLAIM)
• Models of the Cosmological 21 cm Signal from the Epoch of Reionization Calibrated with Lyman-alpha and CMB Data
• Intensity mapping from the sky: synergizing the joint potential of [OIII] and [CII] surveys at reionization
• The ALPINE-ALMA [CII] Survey: the population of [CII]-undetected galaxies and their role in the ${\mathrm{L}}_{[\mathrm{CII}]}$-SFR relation
• CDIM: Cosmic Dawn Intensity Mapper Final Report
• Extragalactic Science with the Experiment for Cryogenic Large-aperture Intensity Mapping
• Intensity Mapping without Cosmic Variance
• Mapping the Universe in HD
• Leveraging cross-correlations and linear covariance-based filtering for line-intensity map reconstructions at linear scales

Cited by in corpus (5)

• Forecasts and Statistical Insights for Line Intensity Mapping Cross-Correlations: A Case Study with 21cm x [CII]
• Impact of astrophysical scatter on the Epoch of Reionization [H I]${}_{21cm}$ bispectrum
• The informativeness of [C II] line-intensity mapping as a probe of the H I content and metallicity of galaxies at the end of 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