Dark matter avoids collapsing into a single point due to its non-zero velocity dispersion and pressure
Astrophysical studies examining dark matter dynamics confirm that velocity dispersion, quantum pressure, and self-interaction effects counteract gravitational attraction, preventing dark matter from collapsing into a single point.
The retrieved physics papers consistently describe how pressure terms (such as quantum pressure or effective temperature/sound speed) and velocity dispersion (or turbulence) counteract gravitational forces via Jeans instability analysis in dark matter models.
Tiberiu Harko. Jeans instability and turbulent gravitational collapse of Bose–Einstein condensate dark matter halos. 2019. https://doi.org/10.1140/epjc/s10052-019-7285-3
Demonstrates how quantum pressure and velocity-related dispersion terms (such as vortices and turbulence) counteract gravitational collapse and determine Jeans stability scales.
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Pierre-Henri Chavanis. Jeans Instability of Dissipative Self-Gravitating Bose–Einstein Condensates with Repulsive or Attractive Self-Interaction: Application to Dark Matter. 2020. https://doi.org/10.3390/universe6120226
Analyzes the role of self-interactions, sound speed, and pressure-like terms in preventing gravitational instability and governing dark matter halo formation.
Kamel Ourabah. Jeans instability in dark matter halos. 2020. https://doi.org/10.1088/1402-4896/ab7650
Shows that effective temperature and pressure-like non-locality effects act against gravitational forces to ensure stability in dark matter halos.
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