Modeling the HI-Halo Connection: Evolution, Scatter, and a Halo-based Prescription for 21-cm Mock Catalogs

arXiv:2607.20123 · astro-ph.CO, astro-ph.GA · Submitted 2026-07-22 · Read on arXiv

Mohd Kamran, Gabriella De Lucia, Marta Spinelli, Lizhi Xie, Fabio Fontanot, Michaela Hirschmann

astro-ph.CO, astro-ph.GA

Submitted: 2026-07-22

Comments: 14 Pages, 10 figures, 3 tables, 1 appendix

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• AGN — 24× in this paper · explained in 1 episode
• AGN Feedback — 12× in this paper · explained in 1 episode
• Clustering — 7× in this paper · explained in 2 episodes
• Trace — 6× in this paper · explained in 2 episodes
• Abundance — 5× in this paper · explained in 1 episode
• Calibration — 5× in this paper · explained in 7 episodes
• Square Kilometre Array — 5× in this paper
• 21-cm signal — 4× in this paper · explained in 1 episode
• Stellar Feedback — 3× in this paper · explained in 2 episodes
• Anti-correlation — 2× in this paper · explained in 3 episodes
• Benchmark — 2× in this paper · explained in 2 episodes
• 21-cm intensity mapping — 1× in this paper · explained in 2 episodes
• Adam — 1× in this paper · explained in 2 episodes
• N-body simulations — 1× in this paper · explained in 2 episodes
• Unified Framework — 1× in this paper · explained in 5 episodes

Sources

• Hydrogen 21-cm Intensity Mapping at redshift 0.8
• Detection of the Cosmological 21 cm Signal in Auto-correlation at z ~ 1 with the Canadian Hydrogen Intensity Mapping Experiment
• Radio sirens: inferring $H_0$ with binary black holes and neutral hydrogen in the era of the Einstein Telescope and the SKA Observatory
• Theoretical Models of the Atomic Hydrogen Content in Dark Matter Halos
• Gas-rich Ultra-diffuse Galaxies Are Originated from High Specific Angular Momentum
• Methodological Frontiers in 21-cm Intensity Mapping: the Treatment of Systematics and Foreground Contamination

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