Differentiable Forward Modeling for Efficient and Accurate Shear Inference

arXiv:2604.22048 · astro-ph.IM, astro-ph.CO · Submitted 2026-08-21 · Read on arXiv

Ismael Mendoza, Axel Guinot, Matthew R. Becker, Camille Avestruz, Jean-Eric Campagne, Natalia Porqueres, Michael Schneider, Eleni Tsaprazi, the LSST Dark Energy Science Collaboration

astro-ph.IM, astro-ph.CO

Submitted: 2026-08-21

Updated: 2026-08-25

Code: https://github.com/GalSim-developers/JAX-GalSim

Terminology

• Calibration — 20× in this paper · explained in 7 episodes
• Forward modeling — 6× in this paper · explained in 2 episodes
• Accuracy — 4× in this paper · explained in 1 episode
• Weak Lensing — 3× in this paper · explained in 2 episodes
• Bayesian Fourier Domain — 2× in this paper
• No-U-Turn Sampler — 2× in this paper
• Paper Review — 2× in this paper · explained in 2 episodes
• Selection Bias — 2× in this paper · explained in 4 episodes
• Adam — 1× in this paper · explained in 2 episodes
• Bayesian Framework — 1× in this paper · explained in 3 episodes
• Bayesian Inference — 1× in this paper · explained in 5 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Core — 1× in this paper · explained in 2 episodes
• Generalization — 1× in this paper · explained in 13 episodes
• Gravitational Lensing — 1× in this paper · explained in 2 episodes
• Hierarchical Framework — 1× in this paper · explained in 2 episodes
• Normalizing Flow — 1× in this paper · explained in 3 episodes
• Normalizing Flows — 1× in this paper · explained in 4 episodes
• Observatory Legacy Survey of Space and Time — 1× in this paper
• Self-consistency — 1× in this paper · explained in 2 episodes
• Trace — 1× in this paper · explained in 2 episodes

Sources

• Chromatic Effects on the PSF and Shear Measurement for the Roman Space Telescope High-Latitude Wide Area Survey
• A Conceptual Introduction to Hamiltonian Monte Carlo
• MADNESS Deblender: Maximum A posteriori with Deep NEural networks for Source Separation
• Markov Chain Monte Carlo for Bayesian Parametric Galaxy Modeling in LSST
• BlackJAX: Composable Bayesian inference in JAX
• Self-calibration of weak lensing cosmic shear biases
• Hyper Suprime-Cam Year 3 Results: Cosmology from Cosmic Shear Power Spectra
• Euclid Definition Study Report
• Bayesian Workflow
• Metacalibration: Direct Self-Calibration of Biases in Shear Measurement
• Shear measurement bias due to spatially varying spectral energy distributions in galaxies
• Hyper Suprime-Cam Year 3 Results: Cosmology from Cosmic Shear Two-point Correlation Functions
• Composable Effects for Flexible and Accelerated Probabilistic Programming in NumPyro
• Weak Gravitational Lensing
• Towards solving model bias in cosmic shear forward modeling
• Steps towards nonlinear cluster inversion through gravitational distortions: III. Including a redshift distribution of the sources
• Benchmarking field-level cosmological inference from galaxy redshift surveys
• Running Markov Chain Monte Carlo on Modern Hardware and Software
• Wide-Field InfrarRed Survey Telescope-Astrophysics Focused Telescope Assets WFIRST-AFTA 2015 Report
• Pixellated Posterior Sampling of Point Spread Functions in Astronomical Images

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