Effect of Magnetic Field and Equilibrium Flow on Rayleigh–Taylor Instability

We investigate the effect of a finite equilibrium flow and magnetic field on the Rayleigh–Taylor instability. It is found that the equilibrium flow only makes a frequency shift of perturbation and the growth rate of the Rayleigh–Taylor instability remains unchanged. However, the magnetic field can change the growth rate and, in particular, a very strong magnetic field suppresses the growth rate.