Exploring non-Poisson satellite occupation in HOD models and its impact on 2- and 3-point galaxy clustering

arXiv:2605.28644 · astro-ph.CO · Submitted 2026-05-27 · Read on arXiv

astro-ph.CO

Submitted: 2026-05-27

Updated: 2026-10-09

Code: https://github.com/cosmodesi/pycorr

Terminology

• Clustering — 59× in this paper · explained in 2 episodes
• Bispectrum — 29× in this paper · explained in 3 episodes
• Halo Occupation Distribution — 14× in this paper
• Accuracy — 5× in this paper · explained in 1 episode
• Higher-order statistics — 4× in this paper · explained in 2 episodes
• N-body simulations — 3× in this paper · explained in 2 episodes
• Abundance — 2× in this paper · explained in 1 episode
• Generalization — 2× in this paper · explained in 13 episodes
• Anisotropy — 1× in this paper · explained in 3 episodes
• Core — 1× in this paper · explained in 2 episodes

Sources

• Euclid Definition Study Report
• Snowmass White Paper: Effective Field Theories in Cosmology
• The DESI One-Percent Survey: Exploring the Halo Occupation Distribution of Luminous Red Galaxies and Quasi-Stellar Objects with AbacusSummit
• The IllustrisTNG Simulations: Public Data Release
• Reanalyzing DESI DR1: 2. Constraints on Dark Energy, Spatial Curvature, and Neutrino Masses
• Preference for evolving dark energy in light of the galaxy bispectrum
• Improving and extending non-Poissonian distributions for satellite galaxies sampling in HOD: applications to eBOSS ELGs
• The DESI One-Percent Survey: Evidence for Assembly Bias from Low-Redshift Counts-in-Cylinders Measurements
• Galaxy-Multiplet Clustering from DESI DR2

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