Magnetosheath structure in an anisotropic plasma model

Variations of the magnetic field and plasma parameters across the Earth's m agnetosheath are calculated for an anisotropic plasma in the Chew-Goldberge r-Low approximation. Additionally, proton pitch-angle diffusion is taken in to account as the energy transfer mechanism between the direction perpendic ular and parallel to the magnetic field. We discuss the main characteristic s of the magnetic barrier for different temperature relaxation times and th eir dependence on the interplanetary magnetic field orientation.