Aug 12 – 13, 2026
Laurentian University
Canada/Eastern timezone

Probing Dark Matter in the GD-1 Stellar Stream with Simulation-Based Inference

Aug 12, 2026, 11:36 AM
12m
C-203 (Laurentian University)

C-203

Laurentian University

Session II Presentations

Speaker

Mr Driss Mestiri

Description

I present a simulation-based inference framework that characterizes dark matter microphysics through GD-1 stellar stream perturbations. By training advanced neural networks on millions of simulated streams, the pipeline can return calibrated parameter posteriors and model-class probabilities for cold, self-interacting and ultra-light dark matter, as well as baryonic perturbers down to 3×10⁶ M⊙. Ultimately delivering quantitative constraints on the Milky Way substructure spectrum, and motivating refined modeling and future multi-probe tests of dark matter physics.

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Author

Co-author

Mr Pranav Kulkarni (Stanford Artificial Intelligence Laboritory)

Presentation materials