Impact and interplay of CDM analysis choices for LSST cosmic shear

arXiv:2602.21863 · astro-ph.CO · Submitted 2026-02-25 · Read on arXiv

astro-ph.CO

Submitted: 2026-02-25

Updated: 2026-08-27

Code: https://github.com/jemme07/pyspk

Terminology

• Alignment — 51× in this paper · explained in 1 episode
• AGN — 43× in this paper · explained in 1 episode
• Calibration — 42× in this paper · explained in 7 episodes
• Accuracy — 32× in this paper · explained in 1 episode
• Cosmic Shear Analysis — 19× in this paper · explained in 2 episodes
• Clustering — 8× in this paper · explained in 2 episodes
• Matter Power Spectrum — 8× in this paper · explained in 2 episodes
• Robustness — 8× in this paper · explained in 5 episodes
• Weak Lensing — 7× in this paper · explained in 2 episodes
• Degeneracy — 3× in this paper · explained in 3 episodes
• Systematic Bias — 2× in this paper · explained in 3 episodes
• AGN Feedback — 1× in this paper · explained in 1 episode
• Active Galactic Nuclei — 1× in this paper
• Active Galactic Nuclei (AGN) — 1× in this paper · explained in 1 episode
• Core — 1× in this paper · explained in 2 episodes
• Metallicity — 1× in this paper · explained in 3 episodes
• N-body simulations — 1× in this paper · explained in 2 episodes
• Observatory Legacy Survey of Space and Time — 1× in this paper

Sources

• Map-level baryonification: Efficient modelling of higher-order correlations in the weak lensing and thermal Sunyaev-Zeldovich fields
• Dark Energy Survey Year 6 Results: Photometric Data Set for Cosmology
• Dimensional reduction for sampled priors and application to photometric redshift distributions
• Confronting cosmic shear astrophysical uncertainties: DES Year 3 revisited
• Machine Learning LSST 3x2pt analyses -- forecasting the impact of systematics on cosmological constraints using neural networks
• Dark Energy Survey Year 6 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• Deciphering Baryonic Feedback from ACT tSZ Galaxy Clusters
• Euclid preparation. Cosmology Likelihood for Observables in Euclid (CLOE). 6: Impact of systematic uncertainties on the cosmological analysis
• Dark Energy Survey Year 3 Results: Multi-Probe Modeling Strategy and Validation
• Euclid Definition Study Report
• One latent to fit them all: a unified representation of baryonic feedback on matter distribution
• DESI-DR1 $3 \times 2$-pt analysis: consistent cosmology across weak lensing surveys
• A first measurement of baryonic feedback with Fast Radio Bursts
• Comparing cosmic shear nulling methods for Stage-IV surveys
• Dark Energy Survey Year 6 Results: Weak Lensing and Galaxy Clustering Cosmological Analysis Framework
• Intrinsic alignment demographics for next-generation lensing: Revealing galaxy property trends with DESI Y1 direct measurements
• The suppression of the matter power spectrum: strong feedback from X-ray gas mass fractions, kSZ effect profiles, and galaxy-galaxy lensing
• Disentangling the Halo: Joint Model for Measurements of the Kinetic Sunyaev-Zeldovich Effect and Galaxy-Galaxy Lensing
• The LSST Dark Energy Science Collaboration (DESC) Science Requirements Document
• Dark Energy Survey Year 6 Results: Redshift Calibration of the Weak Lensing Source Galaxies

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• Dark Energy Survey Year 6 Results: Weak Lensing and Galaxy Clustering Cosmological Analysis Framework
• Exploring the Impact of Systematic Bias in Type Ia Supernova Cosmology Across Diverse Dark Energy Parametrizations
• Non-Gaussian Galaxy Stochasticity and the Noise-Field Formulation