Projecting the ultimate pulsar timing sensitivity to dark matter substructure in a stochastic gravitational wave background

arXiv:2606.18329 · astro-ph.CO, hep-ph · Submitted 2026-06-16 · Read on arXiv

Joshua W. Foster, Tanner Trickle, Fabrizio Vassallo

astro-ph.CO, hep-ph

Submitted: 2026-06-16

Comments: 34 pages, 17 figures. Missing space in abstract corrected in V2. Otherwise unchanged

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

Terminology

• Abundance — 18× in this paper · explained in 1 episode
• Benchmark — 12× in this paper · explained in 2 episodes
• Diffusion Model — 12× in this paper · explained in 8 episodes
• Generative Model — 11× in this paper · explained in 2 episodes
• Normalizing Flow — 7× in this paper · explained in 3 episodes
• pulsar timing arrays — 6× in this paper · explained in 2 episodes
• Microlensing — 4× in this paper · explained in 2 episodes
• Non-Gaussianity — 3× in this paper · explained in 2 episodes
• Consistency — 2× in this paper · explained in 3 episodes
• Stochastic Gravitational Wave Background (SGWB) — 2× in this paper · explained in 3 episodes
• Adam — 1× in this paper · explained in 2 episodes
• Anisotropy — 1× in this paper · explained in 3 episodes
• Calibration — 1× in this paper · explained in 7 episodes
• Clustering — 1× in this paper · explained in 2 episodes
• Computational Tractability — 1× in this paper · explained in 2 episodes
• Degeneracy — 1× in this paper · explained in 3 episodes
• Diffusion Models — 1× in this paper · explained in 6 episodes
• Embeddings — 1× in this paper · explained in 2 episodes
• Generative Models — 1× in this paper · explained in 2 episodes
• Homogeneity — 1× in this paper · explained in 2 episodes
• Matter Power Spectrum — 1× in this paper · explained in 2 episodes
• National Energy Research Scientific Computing Center — 1× in this paper
• Normalizing Flows — 1× in this paper · explained in 4 episodes
• Reheating — 1× in this paper · explained in 2 episodes
• Scaling Laws — 1× in this paper · explained in 4 episodes

Sources

• Non-Linear Axion Dynamics and Formation of Cosmological Pseudo-Solitons
• Astrophysical Effects of Scalar Dark Matter Miniclusters
• Vector Dark Matter from Inflationary Fluctuations
• Early-Universe Simulations of the Cosmological Axion
• Simulations of Axion Minihalos
• Structure of Axion Miniclusters
• Miniclusters from axion string simulations
• Dark Matter Self-interactions and Small Scale Structure
• The Large-Misalignment Mechanism for the Formation of Compact Axion Structures: Signatures from the QCD Axion to Fuzzy Dark Matter
• Constraints on Primordial Black Holes
• Reheating Effects in the Matter Power Spectrum and Implications for Substructure
• Non-thermal Histories and Implications for Structure Formation
• Cannibal domination and the matter power spectrum
• Milky Way Satellite Census. III. Constraints on Dark Matter Properties from Observations of Milky Way Satellite Galaxies
• The Spur and the Gap in GD-1: Dynamical evidence for a dark substructure in the Milky Way halo
• Semi-Analytic Modeling of Dark Matter Subhalo Encounters with Thin Stellar Streams: Statistical Predictions for GD-1-like Streams in CDM
• Detectability of dark matter subhalo impacts in Milky Way stellar streams
• Constraints on MACHO Dark Matter from Compact Stellar Systems in Ultra-Faint Dwarf Galaxies
• Constraints on Dark Matter from Dynamical Heating of Stars in Ultrafaint Dwarfs. Part 1: MACHOs and Primordial Black Holes
• Constraints on Dark Matter from Dynamical Heating of Stars in Ultrafaint Dwarfs. Part 2: Substructure and the Primordial Power Spectrum

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