[CII] line intensity mapping the epoch of reionization with the Prime-Cam on FYST

Understand

We predict the three-dimensional intensity power spectrum (PS) of the [CII] 158$\,\mu$m line throughout the epoch of (and post) reionization at redshifts from $\approx$ 3.5 to 8.

• We study the detectability of the PS in a line intensity mapping (LIM) survey with the Fred Young Submillimeter Telescope (FYST).
• We created mock [CII] tomographic scans in redshift bins at $z\approx$ 3.7, 4.3, 5.8, and 7.4 using the Illustris TNG300-1 $\Lambda$CDM simulation and adopting a relation between the star formation activity and the [CII] luminosity ($L_{[CII]}$) of galaxies.
• A star formation rate (SFR) was assigned to a dark matter halo in the Illustris simulation in two ways: (i) we adopted the SFR computed in the Illustris simulation and, (ii) we matched the abundance of the halos with the SFR traced by the observed dust-corrected ultraviolet luminosity function of high-redshift galaxies.