Gravitation Field Dynamics in Jeans Theory
  Closed system of time equations for nonrelativistic gravitation field and
hydrodynamic medium was obtained by taking into account binary correlations of
the field, which is the generalization of Jeans theory. Distribution function
of the systemwas built on the basis of the Bogolyubov reduced description
method. Calculations were carried out up to the first order of a perturbation
theory in interaction. Adiabatic and enthropic types of perturbations were
corrected and two new types of perturbations were found.
