Intensity mapping from the sky: synergizing the joint potential of [O <scp>iii</scp>] and [C <scp>ii</scp>] surveys at reionization

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