Kinematics and Dynamics of Diffuse Astrophysical Media

The area of diffuse astrophysical media is enormous and ranges over circum­ stellar to extragalactic scales. The physical conditions can vary from cool dusty gases to collections of relativistic particles. Flows in such media are set up by en­ ergy and momentum injection from winds, jets and explosions. The study of these phenomena involves physics, chemistry and, inevitably, hydrodynamics. One of...