Cosmic Velocity Flows: from Theory to Observations

arXiv:2608.03530 · astro-ph.CO · Submitted 2026-08-04 · Read on arXiv

Saee Dhawalikar

astro-ph.CO

Submitted: 2026-08-04

Comments: 172 pages, PhD thesis

Code: https://github.com/a-paranjape/sahyadri-sandbox

Project page: https://lesgourg.github.io/class_public/class.html

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

Terminology

• Clustering — 69× in this paper · explained in 2 episodes
• Anisotropy — 60× in this paper · explained in 3 episodes
• Large-Scale Structure — 35× in this paper
• Velocity Dispersion — 31× in this paper · explained in 2 episodes
• Calibration — 24× in this paper · explained in 7 episodes
• N-body simulations — 24× in this paper · explained in 2 episodes
• Matter Power Spectrum — 20× in this paper · explained in 2 episodes
• Abundance — 12× in this paper · explained in 1 episode
• Constant Neighbour — 12× in this paper
• Trace — 12× in this paper · explained in 2 episodes
• Accuracy — 11× in this paper · explained in 1 episode
• Alignment — 11× in this paper · explained in 1 episode
• Baryon Acoustic Oscillation — 10× in this paper
• Optimized Fourier — 10× in this paper
• Voronoi Volume Function — 10× in this paper
• Robustness — 9× in this paper · explained in 5 episodes
• Core — 8× in this paper · explained in 2 episodes
• Optimized Neighbour — 7× in this paper
• Constant Fourier — 6× in this paper
• Weak Lensing — 5× in this paper · explained in 2 episodes
• Baryonic Feedback — 4× in this paper · explained in 3 episodes
• Delaunay Tessellation Field Estimator — 4× in this paper
• Journal of Cosmology and Astroparticle Physics — 4× in this paper
• AGN — 3× in this paper · explained in 1 episode
• Consistency — 3× in this paper · explained in 3 episodes
• Sloan Digital Sky Survey — 3× in this paper
• Environmental Quenching — 2× in this paper · explained in 2 episodes
• Higher-order statistics — 2× in this paper · explained in 2 episodes
• RAG — 2× in this paper · explained in 3 episodes
• Simulation-based Inference — 2× in this paper · explained in 2 episodes
• Spherical Overdensity — 2× in this paper
• ARK — 1× in this paper · explained in 1 episode
• Accretion Flows — 1× in this paper · explained in 1 episode
• Bispectrum — 1× in this paper · explained in 3 episodes
• Cosmic Microwave Background — 1× in this paper
• Degeneracy — 1× in this paper · explained in 3 episodes
• Graph Construction — 1× in this paper · explained in 3 episodes
• Gravitational Lensing — 1× in this paper · explained in 2 episodes
• Hierarchical Classification — 1× in this paper · explained in 2 episodes
• Hierarchical Framework — 1× in this paper · explained in 2 episodes
• Hubble Tension — 1× in this paper · explained in 9 episodes
• Inter-University Centre for Astronomy and Astrophysics — 1× in this paper
• Over-smoothing — 1× in this paper · explained in 4 episodes
• Reconstruction Error — 1× in this paper · explained in 2 episodes
• Redshift-Space Distortions (RSD) — 1× in this paper · explained in 2 episodes
• Temporal consistency — 1× in this paper · explained in 2 episodes

Sources

• Towards unbiased recovery of cosmic filament properties: the role of spine curvature and optimized smoothing
• Sahyadri: A simulation suite for the cosmology dependence of the Cosmic Web
• Stabilizing simulation-based cosmological Fisher forecasts: a case study using the Voronoi volume function
• Hierarchical Reconstruction of the Cosmic Web, The H-Spine method
• Distinguish dark matter theories with the cosmic web and next-generation surveys I: an alternative theory of gravity
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• Evolution of cosmic filaments in the MTNG simulation
• HYMALAIA: A Hybrid Lagrangian Model for Intrinsic Alignments
• A simulated annealing approach to parameter inference with expensive likelihoods
• Geometry and Morphology of the Cosmic Web: Analyzing Spatial Patterns in the Universe
• The boundary of cosmic filaments
• Universal Dark-matter Density Profiles of Cosmic Filaments

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