The impact of the IGM thermal state on the Ly alpha flux 3D power spectrum from linear to highly non-linear scales

arXiv:2608.24784 · astro-ph.CO · Submitted 2026-08-25 · Read on arXiv

astro-ph.CO

Submitted: 2026-08-25

Updated: 2026-08-25

Comments: 32+21 pages, 14+7 figures, 1+6 tables, Comments welcome

Code: https://github.com/sfschen/ZeNBu

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

Terminology

• alpha — 14× in this paper · explained in 1 episode
• Clustering — 11× in this paper · explained in 2 episodes
• Fidelity — 4× in this paper · explained in 2 episodes
• Matter Power Spectrum — 3× in this paper · explained in 2 episodes
• AGN — 2× in this paper · explained in 1 episode
• AGN Feedback — 2× in this paper · explained in 1 episode
• Abundance — 2× in this paper · explained in 1 episode
• Anisotropy — 2× in this paper · explained in 3 episodes
• Bispectrum — 2× in this paper · explained in 3 episodes
• Calibration — 2× in this paper · explained in 7 episodes
• Effective Field Theory (EFT) — 2× in this paper · explained in 2 episodes
• No-U-Turn Sampler — 2× in this paper
• Primordial Magnetic Fields — 2× in this paper · explained in 2 episodes
• 21-cm signal — 1× in this paper · explained in 1 episode
• Accuracy — 1× in this paper · explained in 1 episode
• Consistency — 1× in this paper · explained in 3 episodes
• Dark Energy Spectroscopic Instrument — 1× in this paper
• Degeneracy — 1× in this paper · explained in 3 episodes
• Redshift-Space Distortions (RSD) — 1× in this paper · explained in 2 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Wide-field Spectroscopic Telescope — 1× in this paper

Sources

• The Baryon Oscillation Spectroscopic Survey of SDSS-III
• The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Overview and Early Data
• The Lyman-alpha forest in three dimensions: measurements of large scale flux correlations from BOSS 1st-year data
• Baryon Acoustic Oscillations in the Ly-\alpha\ forest of BOSS quasars
• Baryon Acoustic Oscillations in the Ly{\alpha} forest of BOSS DR11 quasars
• Measurement of BAO correlations at $z=2.3$ with SDSS DR12 \lya-Forests
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Baryon acoustic oscillations with Lyman-$\alpha$ forests
• The DESI Experiment Part I: Science,Targeting, and Survey Design
• The Wide-field Spectroscopic Telescope (WST) Science White Paper
• The Early Data Release of the Dark Energy Spectroscopic Instrument
• The impact of relativistic effects on the 3D Quasar-Lyman-$\alpha$ cross-correlation
• DESI DR1 Ly$\alpha$ forest: 3D full-shape analysis and cosmological constraints
• Recovery of the Power Spectrum of Mass Fluctuations from Observations of the Lyman-alpha Forest
• The Observed Probability Distribution Function, Power Spectrum, and Correlation Function of the Transmitted Flux in the Lyman-alpha Forest
• The one-dimensional Ly-alpha forest power spectrum from BOSS
• 3D Correlations in the Lyman-$\alpha$ Forest from Early DESI Data
• Constraining Warm Dark Matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-alpha forest
• Warm Dark Matter as a solution to the small scale crisis: new constraints from high redshift Lyman-alpha forest data
• Constraints from Ly-$\alpha$ forests on non-thermal dark matter including resonantly-produced sterile neutrinos
• Novel constraints on non-cold (non-thermal) Dark Matter from Lyman-$\alpha$ forest data

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