Tracing Ultra Light Axions in Post-reionization, Lyman- alpha and CMB Missions

arXiv:2606.17176 · astro-ph.CO, hep-ph · Submitted 2026-06-15 · Read on arXiv

Debarun Paul, Sourav Pal, Amit Dutta Banik, Supratik Pal

astro-ph.CO, hep-ph

Submitted: 2026-06-15

Comments: 12 sets of figures. 2 tables. Comments are welcome!

Code: https://github.com/PoulinV/AxiCLASS

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

Terminology

• Abundance — 39× in this paper · explained in 1 episode
• Matter Power Spectrum — 13× in this paper · explained in 2 episodes
• Clustering — 10× in this paper · explained in 2 episodes
• 21-cm intensity mapping — 6× in this paper · explained in 2 episodes
• alpha — 6× in this paper · explained in 1 episode
• Square Kilometre Array — 5× in this paper
• 21-cm Power Spectrum — 3× in this paper · explained in 1 episode
• 21-cm signal — 3× in this paper · explained in 1 episode
• Core — 3× in this paper · explained in 2 episodes
• Hubble Tension — 3× in this paper · explained in 9 episodes
• Baryon Oscillation Spectroscopic Survey — 2× in this paper
• Dark Energy Survey — 2× in this paper
• Degeneracy — 2× in this paper · explained in 3 episodes
• Indian Statistical Institute — 2× in this paper
• Packed Ultrawideband Mapping Array — 2× in this paper
• Trace — 2× in this paper · explained in 2 episodes
• Velocity Dispersion — 2× in this paper · explained in 2 episodes
• Benchmark — 1× in this paper · explained in 2 episodes
• Bispectrum — 1× in this paper · explained in 3 episodes
• Dark Energy Spectroscopic Instrument — 1× in this paper
• Fisher Information — 1× in this paper · explained in 3 episodes
• Gravitational Lensing — 1× in this paper · explained in 2 episodes
• Integrated Sachs-Wolfe — 1× in this paper
• Non-Gaussianity — 1× in this paper · explained in 2 episodes
• Ooty Wide Field Array — 1× in this paper
• Primordial Magnetic Fields — 1× in this paper · explained in 2 episodes
• Primordial non-Gaussianity — 1× in this paper · explained in 2 episodes
• Signal-to-noise ratio (SNR) — 1× in this paper · explained in 2 episodes
• Symmetry Breaking — 1× in this paper · explained in 3 episodes
• Weak Lensing — 1× in this paper · explained in 2 episodes

Sources

• Too big to fail? The puzzling darkness of massive Milky Way subhaloes
• The Milky Way's bright satellites as an apparent failure of LCDM
• Intensity Mapping as a Probe of Axion Dark Matter
• Using the Full Power of the Cosmic Microwave Background to Probe Axion Dark Matter
• A search for ultra-light axions using precision cosmological data
• Axion Cosmology
• Axion as a Cold Dark Matter candidate
• Gravitational lensing $H_0$ tension from ultralight axion galactic cores
• Dark Sector to Restore Cosmological Concordance
• Constraining Ultralight Axions with Galaxy Surveys
• Alleviating both $H_0$ and $S_8$ tensions: early dark energy lifts the CMB-lockdown on ultralight axion
• Late-time cosmology with 21cm intensity mapping experiments
• Cosmology with Phase 1 of the Square Kilometre Array; Red Book 2018: Technical specifications and performance forecasts
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• Fuzzy Dark Matter and the Dark Energy Survey Year 1 Data
• First constraints on fuzzy dark matter from Lyman-$\alpha$ forest data and hydrodynamical simulations
• Constraining the mass of light bosonic dark matter using SDSS Lyman-$\alpha$ forest
• Strong bound on canonical ultra-light axion dark matter from the Lyman-alpha forest
• Lyman-alpha Constraints on Ultralight Scalar Dark Matter: Implications for the Early and Late Universe
• Inflation and Early Dark Energy with a Stage II Hydrogen Intensity Mapping Experiment

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