Dynamical flattening of halo density cusps by Q-ball dark matter

arXiv:2607.28517 · hep-ph, astro-ph.CO, astro-ph.GA · Submitted 2026-07-30 · Read on arXiv

Alexander Libanov, Sergey Troitsky

hep-ph, astro-ph.CO, astro-ph.GA

Submitted: 2026-07-30

Comments: 17 pages, 7 figures. Submitted to Journal of Cosmology and Astroparticle Physics

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

Terminology

• Core — 24× in this paper · explained in 2 episodes
• Microlensing — 4× in this paper · explained in 2 episodes
• Baryonic Feedback — 2× in this paper · explained in 3 episodes
• Mass Segregation — 2× in this paper · explained in 2 episodes
• Clustering — 1× in this paper · explained in 2 episodes

Sources

• The distribution of dark matter in galaxies
• Baryonic solutions and challenges for cosmological models of dwarf galaxies
• Review of solutions to the Cusp-core problem of the $\Lambda$CDM Model
• The unexpected diversity of dwarf galaxy rotation curves
• The diverse dark matter density at sub-kiloparsec scales in Milky Way satellites:implications for the nature of dark matter
• The Dark Matter Distributions in Low-Mass Disk Galaxies. II. The Inner Density Profiles
• How supernova feedback turns dark matter cusps into cores
• Mass Models for Low Surface Brightness Galaxies with High Resolution Optical Velocity Fields
• High-resolution mass models of dwarf galaxies from LITTLE THINGS
• The dependence of dark matter profiles on the stellar to halo mass ratio: a prediction for cusps vs cores
• Cusp-to-Core Transition of Dark Matter Halos across Galaxy Mass Scales
• Diverse dark matter profiles in FIRE dwarfs: black holes, cosmic rays and the cusp-core enigma
• Baryonic clues to the puzzling diversity of dwarf galaxy rotation curves
• Dark Matter Self-interactions and Small Scale Structure
• Astrophysical Tests of Dark Matter Self-Interactions
• Diversity in density profiles of self-interacting dark matter satellite halos
• A Self-interacting Dark Matter Solution to the Extreme Diversity of Low-mass Halo Properties
• Gravothermal collapse and the diversity of galactic rotation curves
• Gravothermal collapse of Self-Interacting Dark Matter halos as the Origin of Intermediate Mass Black Holes in Milky Way satellites
• Diversifying halo structures in two-component self-interacting dark matter models via mass segregation

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