INTERACTION OF COSMIC-RAYS WITH MAGNETOHYDRODYNAMIC TURBULENCE IN COSMIC MEDIA

This article presents a review of some important new results on the pr oblem of cosmic ray propagation and acceleration in interstellar, circ umstellar, and interplanetary space, taking into account existing inho mogeneity, anisotropy, and gyrotropy, and also the stochastic properti es of cosmic media. A unified theoretical method is applied to describ e cosmic ray distribution. The possibility of a significant decrease i n cosmic ray diffusivity in compressible turbulent cosmic media is dem onstrated and discussed. Theoretical results are compared with observa tions, and some conclusions are drawn on the processes of cosmic ray a cceleration and propagation.