Probing Baryons with the Kinematic Sunyae Zel'dovich Effect and Machine Learning Derived Peculiar Velocities using DESI DR2 and ACT DR6

arXiv:2609.36355 · astro-ph.CO · Submitted 2026-09-28 · Read on arXiv

astro-ph.CO

Submitted: 2026-09-28

Updated: 2026-09-28

Code: https://github.com/cosmodesi/pyrecon

Terminology

• Aperture — 11× in this paper · explained in 1 episode
• Consistency — 11× in this paper · explained in 3 episodes
• Atacama Cosmology Telescope — 6× in this paper
• Calibration — 5× in this paper · explained in 7 episodes
• Department of Energy — 4× in this paper
• Transformer — 4× in this paper · explained in 2 episodes
• Robustness — 3× in this paper · explained in 5 episodes
• Clustering — 2× in this paper · explained in 2 episodes
• Matter Power Spectrum — 2× in this paper · explained in 2 episodes
• National Science Foundation — 2× in this paper
• ACT Data — 1× in this paper · explained in 1 episode
• Abundance — 1× in this paper · explained in 1 episode
• Accuracy — 1× in this paper · explained in 1 episode
• Aperture Photometry — 1× in this paper · explained in 1 episode
• Dark Energy Spectroscopic Instrument — 1× in this paper
• Interpretability — 1× in this paper · explained in 15 episodes
• N-body simulations — 1× in this paper · explained in 2 episodes
• National Energy Research Scientific Computing Center — 1× in this paper
• Trace — 1× in this paper · explained in 2 episodes

Sources

• Actively Star Forming Elliptical Galaxies at Low Redshifts in the Sloan Digital Sky Survey
• Planck 2018 results. VI. Cosmological parameters
• The Atacama Cosmology Telescope: DR6 Power Spectra, Likelihoods and $\Lambda$CDM Parameters
• The Atacama Cosmology Telescope: DR6 Constraints on Extended Cosmological Models
• Where Are the Baryons? II: Feedback Effects
• The impact of feedback on cosmological gas accretion
• Baryons, Neutrinos, Feedback and Weak Gravitational Lensing
• On the degeneracy between baryon feedback and massive neutrinos as probed by matter clustering and weak lensing
• Baryonic effects for weak lensing. Part I. Power spectrum and covariance matrix
• A non-linear solution to the $S_8$ tension?
• DESI 2024 VII: Cosmological Constraints from the Full-Shape Modeling of Clustering Measurements
• DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints
• Evidence for the kinematic Sunyaev-Ze\v{l}dovich effect with ACTPol and velocity reconstruction from BOSS
• The Kinematic Sunyaev-Zel'dovich Effect with Projected Fields II: prospects, challenges, and comparison with simulations
• Modified Gravity and Cosmology
• Beyond the Cosmological Standard Model
• Dark Energy vs. Modified Gravity
• Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
• The Atacama Cosmology Telescope: A Test of the Gravitational Force Law on Cosmological Scales Using the Kinematic Sunyaev-Zeldovich Effect
• The kinetic Sunyaev-Zel'dovitch effect as a dark energy probe

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