Theory and observations of galactic dark matter

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Sir James Jeans's (1902 and 1929) linear, acoustic, theory of gravitational instability gives vast errors for the structure formation of the early universe. Gibson's (1996) nonlinear theory shows that nonacoustic density extrema produced by turbulence are gravitationally unstable at turbulent, viscous, or diffusive Schwarz scales LₛT, LₛV, LₛD, independent of Jeans's acoustic scale Lⱼ. Structure formation began with decelerations of 10⁴6 kg protosuperclusters in the hot plasma epoch, 13,000 years after the Big Bang, when LₛV decreased to the Hubble (horizon) scale Lₕ equiv ct, where c is light speed and t is time, giving 10⁴2 kg protogalaxies just before the cooled plasma formed neutral H-He gas at 300,000 years. In 10³ years this primordial gas condensed to 10²3 - 10²5 kg LₛV - LₛT scale objects, termed ``primordial fog particles'' (PFPs). Schild (1996) suggested from continuous microlensing of quasar Q0957 + 561 A,B that the mass of the 10⁴2 kg lens galaxy is dominated by 10²3 - 10²5 kg ``rogue planets... likely to be the missing mass''. A microlensing event seen at three observatories confirms Schild's (1996) claims, and supports Gibson's (1996) prediction that PFPs comprise most of the dark matter at galactic scales.