Void Statistics and CMB Cross-Correlations for Precision Cosmology
Published:Dec 31, 2025 18:37
•1 min read
•ArXiv
Analysis
This paper introduces a novel method, 'analog matching,' for creating mock galaxy catalogs tailored for the Nancy Grace Roman Space Telescope survey. It focuses on validating these catalogs for void statistics and CMB cross-correlation analyses, crucial for precision cosmology. The study emphasizes the importance of accurate void modeling and provides a versatile resource for future research, highlighting the limitations of traditional methods and the need for improved mock accuracy.
Key Takeaways
- •Introduces 'analog matching' for creating mock galaxy catalogs.
- •Focuses on validating catalogs for void statistics and CMB cross-correlation.
- •Highlights the importance of accurate void modeling.
- •Provides a versatile resource for LSS x CMB studies.
- •Demonstrates that reproducing galaxy clustering doesn't guarantee accurate void properties.
Reference
“Reproducing two-dimensional galaxy clustering does not guarantee consistent void properties.”