The Lensing Counter Narrative: An Effective Description of Small-Scale Clustering in Weak Lensing Power Spectra

arXiv:2510.18981 · astro-ph.CO · Submitted 2025-10-21 · Read on arXiv

astro-ph.CO

Submitted: 2025-10-21

Updated: 2026-08-31

Code: https://github.com/AemulusProject/aemulus

Terminology

• Clustering — 31× in this paper · explained in 2 episodes
• Alignment — 28× in this paper · explained in 1 episode
• Matter Power Spectrum — 27× in this paper · explained in 2 episodes
• Weak Lensing — 22× in this paper · explained in 2 episodes
• Baryonic Feedback — 17× in this paper · explained in 3 episodes
• Calibration — 8× in this paper · explained in 7 episodes
• AGN — 6× in this paper · explained in 1 episode
• Accuracy — 4× in this paper · explained in 1 episode
• Effective Field Theory (EFT) — 4× in this paper · explained in 2 episodes
• Gravitational Lensing — 3× in this paper · explained in 2 episodes
• Cosmic Shear Analysis — 2× in this paper · explained in 2 episodes
• Degeneracy — 2× in this paper · explained in 3 episodes
• Robustness — 2× in this paper · explained in 5 episodes
• Activation Function — 1× in this paper · explained in 1 episode
• Adam — 1× in this paper · explained in 2 episodes
• Anisotropy — 1× in this paper · explained in 3 episodes
• Bayesian Inference — 1× in this paper · explained in 5 episodes
• Cosmic Linear Anisotropy Solving System — 1× in this paper
• Hamiltonian Monte Carlo — 1× in this paper
• No U-Turn Sampling — 1× in this paper
• Physical Constraints — 1× in this paper · explained in 7 episodes
• Systematic Bias — 1× in this paper · explained in 3 episodes
• alpha — 1× in this paper · explained in 1 episode

Sources

• Weak Gravitational Lensing
• Weak lensing for precision cosmology
• Dark Energy Survey Year 3 Results: Cosmology from Cosmic Shear and Robustness to Modeling Uncertainty
• Hyper Suprime-Cam Year 3 Results: Cosmology from Cosmic Shear Power Spectra
• Hyper Suprime-Cam Year 3 Results: Cosmology from Cosmic Shear Two-point Correlation Functions
• KiDS-Legacy: Cosmological constraints from cosmic shear with the complete Kilo-Degree Survey
• The Dark Energy Camera All Data Everywhere cosmic shear project V: Constraints on cosmology and astrophysics from 270 million galaxies across 13,000 deg$^2$ of the sky
• LSST Science Book, Version 2.0
• Euclid. I. Overview of the Euclid mission
• Cosmological Parameters from the BOSS Galaxy Power Spectrum
• The Cosmological Analysis of the SDSS/BOSS data from the Effective Field Theory of Large-Scale Structure
• A new analysis of galaxy 2-point functions in the BOSS survey, including full-shape information and post-reconstruction BAO
• Cosmological constraints from the tomographic cross-correlation of DESI Luminous Red Galaxies and Planck CMB lensing
• Quantifying the effect of baryon physics on weak lensing tomography
• Accounting for baryonic effects in cosmic shear tomography: Determining a minimal set of nuisance parameters using PCA
• Modelling baryonic feedback for survey cosmology
• A non-linear solution to the $S_8$ tension?
• DES Y3 cosmic shear down to small scales: constraints on cosmology and baryons
• Ultra-light axions and the $S_8$ tension: joint constraints from the cosmic microwave background and galaxy clustering
• $S_8$ Tension in the Context of Dark Matter-Baryon Scattering

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