Abstract

Abstract We combine recent simulation work on the SFR–[C ii] correlation at high redshift with empirical modeling of the galaxy–halo connection (via UniverseMachine) to forecast [C ii] auto power spectra from z ∼ 4 to z ∼ 8. We compare these to sensitivities realistically expected from various instruments expected to come online in the next decade. If the predictions of our model are correct, [C ii] should be detectable up to z ∼ 6 in this generation of surveys, but detecting [C ii] past the end of reionization will require a generational leap in line-intensity survey capabilities.

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