[CII] line intensity mapping the epoch of reionization with the Prime-Cam on FYST. Karoumpis, C., Magnelli, B., Romano-Díaz, E., Haslbauer, M., & Bertoldi, F. arXiv:2111.12847 [astro-ph], November, 2021. arXiv: 2111.12847
[CII] line intensity mapping the epoch of reionization with the Prime-Cam on FYST [link]Paper  abstract   bibtex   
We predict the three-dimensional intensity power spectrum (PS) of the [CII] 158\${\textbackslash},{\textbackslash}mu\$m line throughout the epoch of (and post) reionization at redshifts from \${\textbackslash}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{\textbackslash}approx\$ 3.7, 4.3, 5.8, and 7.4 using the Illustris TNG300-1 \${\textbackslash}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. The \$L_\{[CII]\}\$ is related to the SFR from a semi-analytic model of galaxy formation, from a hydrodynamical simulation of a high-redshift galaxy, or from a high-redshift [CII] galaxy survey. The [CII] intensity PS was computed from mock tomographic scans to assess its detectability with the anticipated observational capability of the FYST. The amplitude of the predicted [CII] intensity power spectrum varies by more than a factor of 10, depending on the choice of the halo-to-galaxy SFR and the SFR-to-\$L_\{[CII]\}\$ relations. In the planned \$4{\textasciicircum}\{{\textbackslash}circ\} {\textbackslash}times 4{\textasciicircum}\{{\textbackslash}circ\}\$ FYST LIM survey, we expect a detection of the [CII] PS up to \$z {\textbackslash}approx\$ 5.8, and potentially even up to \$z {\textbackslash}approx \$ 7.4. The design of the envisioned FYST LIM survey enables a PS measurement not only in small (\textless10 Mpc) shot noise-dominated scales, but also in large (\textgreater50 Mpc) clustering-dominated scales making it the first LIM experiment that will place constraints on the SFR-to-\$L_\{[CII]\}\$ and the halo-to-galaxy SFR relations simultaneously.
@article{karoumpis_cii_2021,
	title = {[{CII}] line intensity mapping the epoch of reionization with the {Prime}-{Cam} on {FYST}},
	url = {http://arxiv.org/abs/2111.12847},
	abstract = {We predict the three-dimensional intensity power spectrum (PS) of the [CII] 158\${\textbackslash},{\textbackslash}mu\$m line throughout the epoch of (and post) reionization at redshifts from \${\textbackslash}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{\textbackslash}approx\$ 3.7, 4.3, 5.8, and 7.4 using the Illustris TNG300-1 \${\textbackslash}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. The \$L\_\{[CII]\}\$ is related to the SFR from a semi-analytic model of galaxy formation, from a hydrodynamical simulation of a high-redshift galaxy, or from a high-redshift [CII] galaxy survey. The [CII] intensity PS was computed from mock tomographic scans to assess its detectability with the anticipated observational capability of the FYST. The amplitude of the predicted [CII] intensity power spectrum varies by more than a factor of 10, depending on the choice of the halo-to-galaxy SFR and the SFR-to-\$L\_\{[CII]\}\$ relations. In the planned \$4{\textasciicircum}\{{\textbackslash}circ\} {\textbackslash}times 4{\textasciicircum}\{{\textbackslash}circ\}\$ FYST LIM survey, we expect a detection of the [CII] PS up to \$z {\textbackslash}approx\$ 5.8, and potentially even up to \$z {\textbackslash}approx \$ 7.4. The design of the envisioned FYST LIM survey enables a PS measurement not only in small ({\textless}10 Mpc) shot noise-dominated scales, but also in large ({\textgreater}50 Mpc) clustering-dominated scales making it the first LIM experiment that will place constraints on the SFR-to-\$L\_\{[CII]\}\$ and the halo-to-galaxy SFR relations simultaneously.},
	urldate = {2021-12-17},
	journal = {arXiv:2111.12847 [astro-ph]},
	author = {Karoumpis, C. and Magnelli, B. and Romano-Díaz, E. and Haslbauer, M. and Bertoldi, F.},
	month = nov,
	year = {2021},
	note = {arXiv: 2111.12847},
	keywords = {Astrophysics - Astrophysics of Galaxies},
}

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