📖 Hydromagnetic stability of selfgravitating fluid cylinder..

Here in we follow the concept of stability which is given by Chandrasekhar (1981). Suppose that we have a hydrodynamic system which is in a stationary state, i.e. in a state in which none of the variables describing it is a function of time (whether it is initially at rest or streaming). Let be a set of parameters which define this system. These parameters will include geometrical parameters such as the dimensions of the system; parameters characterizing the velocity of the fluid; parameters characterizing the forces which may be acting on the system, such as electromagnetic forces, pressure gradient, temperature gradient,….etc.