Constraints on the population level distribution of nearby Dark Matter halo shapes with extragalactic streams

arXiv:2607.05510 · astro-ph.GA · Submitted 2026-07-06 · Read on arXiv

David Chemaly, Elisabeth Sola, Sergey Koposov, HanYuan Zhang, Vasily Belokurov, Denis Erkal

astro-ph.GA

Submitted: 2026-07-06

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Alignment — 10× in this paper · explained in 1 episode
• Trace — 7× in this paper · explained in 2 episodes
• Bayesian Framework — 4× in this paper · explained in 3 episodes
• Bayesian Inference — 3× in this paper · explained in 5 episodes
• Milky Way — 3× in this paper
• Robustness — 3× in this paper · explained in 5 episodes
• Anti-correlation — 2× in this paper · explained in 3 episodes
• Core — 1× in this paper · explained in 2 episodes
• Hierarchical Framework — 1× in this paper · explained in 2 episodes
• Information Gain — 1× in this paper · explained in 2 episodes
• Symmetry Breaking — 1× in this paper · explained in 3 episodes

Sources

• Constraining the population of dark matter halo shapes using hierarchical inference with extragalactic stellar streams
• Euclid Quick Data Release (Q1): The geometry of dark matter halos from extragalactic streams
• LSST Science Book, Version 2.0
• Euclid Definition Study Report
• Testing Dark Matter with Generative Models for Extragalactic Stellar Streams
• Probing the dark matter haloes of external galaxies with stellar streams
• Potamides: Mapping Dark Matter Halo Shapes from Stellar Stream Tracks in the Local Universe

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