Turbulent mixing, diffusion and gravity in the formation of cosmological structures: the fluid mechanics of dark matter

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The theory of gravitational structure formation in astrophysics and cosmology is revised based on real fluid behavior and turbulent mixing theory. Gibson's 1996-1998 theory balances fluid mechanical forces with gravitational forces and density diffusivity with gravitational diffusivity at critical viscous, turbulent, magnetic, and diffusion length scales termed Schwarz scales LₛX. Condensation and void formation occurs on non-acoustic density nuclei produced by turbulent mixing for scales L>=LₛXmax rather than on sound wave crests and troughs for L>=Lⱼ as required by Jeans's 1902 linear acoustic theory. Schwarz scales LₛX = LₛV, LₛT, LₛM, or LₛD may be smaller or larger than Jeans's scale Lⱼ. Thus, a very different "nonlinear" cosmology emerges to replace the currently accepted "linear" cosmology. According to the new theory, most of the inner halo dark matter of galaxies consists of planetary mass objects that formed soon after the plasma to neutral gas transition 300,000 years after the Big Bang. These objects are termed primordial fog particles (PFPs) and provide an explanation for Schild's 1996 "rogue planets... likely to be the missing mass" of his observed quasar-lens galaxy, inferred from the twinkling frequencies of both quasar images and their phased difference.