21-cm Constraints on S-wave Dark Matter Annihilation with Subhalo-enhanced Effects

arXiv:2609.21479 · astro-ph.CO, hep-ph · Submitted 2026-09-18 · Read on arXiv

astro-ph.CO, hep-ph

Submitted: 2026-09-18

Updated: 2026-09-18

Comments: 15 pages, 7 figures

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

Terminology

• 21-cm signal — 2× in this paper · explained in 1 episode

Related papers

• Angular clustering and bias of photometric quasars in the Kilo-Degree Survey Data Release 4
• A Novel kinetic Sunyaev-Zel'dovich Estimator for Electron-Electron Correlations
• Magnetic fields at the dawn of structure formation I. The CARLA J1510+5958 proto-cluster
• Dark Energy Survey Year 6 Results: Weak Lensing and Galaxy Clustering Cosmological Analysis Framework
• Exploring the Impact of Systematic Bias in Type Ia Supernova Cosmology Across Diverse Dark Energy Parametrizations
• Non-Gaussian Galaxy Stochasticity and the Noise-Field Formulation