For collisionless matter, velocity dispersion replaces sound speed in the Jeans estimate. After free decoupling, a nonrelativistic thermal velocity dispersion redshifts as .

Ancestors (8)

  1. Comoving Jeans length
  2. Jeans instability
  3. Jeans wavenumber
  4. Linear cosmological density perturbation
  5. Cosmology
  6. Branch of physics
  7. Physics
  8. Home

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