Cosmology-dependent covariance in galaxy cluster number counts: consequences for parameter inference

arXiv:2606.30459 · astro-ph.CO, astro-ph.IM · Submitted 2026-06-29 · Read on arXiv

astro-ph.CO, astro-ph.IM

Submitted: 2026-06-29

Updated: 2026-09-21

Comments: 35 pages, 12 figures, 4 tables

Code: https://github.com/NumCosmo/NumCosmo

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

Terminology

• Abundance — 29× in this paper · explained in 1 episode
• Degeneracy — 12× in this paper · explained in 3 episodes
• Super-Sample Covariance — 10× in this paper
• Clustering — 9× in this paper · explained in 2 episodes
• Weak Lensing — 9× in this paper · explained in 2 episodes
• Matter Power Spectrum — 6× in this paper · explained in 2 episodes
• Robustness — 5× in this paper · explained in 5 episodes
• Calibration — 4× in this paper · explained in 7 episodes
• Consistency — 3× in this paper · explained in 3 episodes
• Sloan Digital Sky Survey — 3× in this paper
• Dark Energy Survey — 2× in this paper
• Gravitational Lensing — 2× in this paper · explained in 2 episodes
• Markov Chain Monte Carlo — 2× in this paper
• Simulation-based Inference — 2× in this paper · explained in 2 episodes
• Accuracy — 1× in this paper · explained in 1 episode
• Adaptation — 1× in this paper · explained in 1 episode
• Alignment — 1× in this paper · explained in 1 episode
• Anti-correlation — 1× in this paper · explained in 3 episodes
• Domain Adaptation — 1× in this paper · explained in 5 episodes
• Non-linear Coupling — 1× in this paper · explained in 2 episodes
• Observatory Legacy Survey of Space and Time — 1× in this paper
• Trace — 1× in this paper · explained in 2 episodes
• Unified Framework — 1× in this paper · explained in 5 episodes

Sources

• Cosmological Parameters from Observations of Galaxy Clusters
• Formation of Galaxy Clusters
• Planck 2015 results. XXIV. Cosmology from Sunyaev-Zeldovich cluster counts
• Cosmological inference from combining Planck and ACT cluster counts
• The Observed Growth of Massive Galaxy Clusters I: Statistical Methods and Cosmological Constraints
• Cluster Cosmology Constraints from the 2500 deg$^2$ SPT-SZ Survey: Inclusion of Weak Gravitational Lensing Data from Magellan and the Hubble Space Telescope
• Cosmological Constraints from Galaxy Clusters and Groups in the eROSITA Final Equatorial Depth Survey
• The SRG/eROSITA all-sky survey: Cosmology constraints from cluster abundances in the western Galactic hemisphere
• SPT Clusters with DES and HST Weak Lensing. II. Cosmological Constraints from the Abundance of Massive Halos
• Cosmological Constraints from the SDSS maxBCG Cluster Catalog
• Dark Energy Survey Year 1 Results: Methods for Cluster Cosmology and Application to the SDSS
• Dark Energy Survey Year 1 Results: Cosmological Constraints from Cluster Abundances and Weak Lensing
• Large Synoptic Survey Telescope: Dark Energy Science Collaboration
• Euclid Definition Study Report
• Dark Energy Survey Year 3 Results: Cosmological Constraints from Cluster Abundances, Weak Lensing, and Galaxy Clustering
• The miniJPAS survey: clusters and galaxy groups detection with AMICO
• The miniJPAS survey: Optical detection of galaxy clusters with PZWav
• The SRG/eROSITA All-Sky Survey : Constraints on the structure growth from cluster number counts
• Covariance matrices for halo number counts and correlation functions
• Power Spectrum Super-Sample Covariance

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