astro-ph.CO · 2026-09-10 · No. 111

Cosmology and Nongalactic Astrophysics, 2026-09-10.

1 new papers in astro-ph.CO. Titles, authors, abstracts. Links to arXiv. Want this in your inbox every morning? Subscribe →

01 — The papers

1 entries
  1. 01

    Inductive Biases in Field-Level Cosmological Inference from Galaxy Catalogs

    James O. Baldwin, Shy Genel, Francisco Villaescusa-Navarro

    astro-ph.CO · cs.LG

    We perform field-level likelihood-free inference of the matter density parameter $Ω_m$ from simulated galaxy catalogs using machine learning models with differing inductive biases. Using hydrodynamic simulations from CAMELS, we examine how observable choice and architecture govern cosmological information extraction. We consider galaxy positions and line-of-sight peculiar velocities, separately and jointly, and compare permutation-invariant...

    arxiv.org/abs/2609.09504 · PDF

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