Unveiling dark energy properties with high-sensitivity cross-correlations of neutral hydrogen intensity mapping and galaxy surveys

arXiv:2607.17141 · astro-ph.CO · Submitted 2026-07-19 · Read on arXiv

Alessandro Marins, Chang Feng, Filipe B. Abdalla

astro-ph.CO

Submitted: 2026-07-19

Comments: 11 pages, 5 figures

Code: https://github.com/Cosmoglobe/Commander

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

Terminology

• Trace — 2× in this paper · explained in 2 episodes
• Accuracy — 1× in this paper · explained in 1 episode
• Adam — 1× in this paper · explained in 2 episodes
• Alignment — 1× in this paper · explained in 1 episode
• Consistency — 1× in this paper · explained in 3 episodes
• Matter Power Spectrum — 1× in this paper · explained in 2 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Sparsity — 1× in this paper · explained in 4 episodes
• Systematic Bias — 1× in this paper · explained in 3 episodes
• Weak Lensing — 1× in this paper · explained in 2 episodes

Sources

• LSST Science Book, Version 2.0
• Foreground removal and 21 cm signal estimates: comparing different blind methods for the BINGO Telescope
• Detectability of the 21 cm signal with BINGO through cross-correlation with photometric surveys
• The LSST Dark Energy Science Collaboration (DESC) Science Requirements Document

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