Study of dusty plasma as origin of low-frequency oscillations in space

By using the fundamental fluid equations of continuity and momentum transfer, we derive an eigenvalue equation for Rayleigh Taylor (RT) instability and solve the equation numerically. The result shows that the growth rate of the RT mode is considerably higher in a dusty plasma than in a pure plasma. This is a first step, but it shows quite unambiguously that the dust might have a crucial role in explaining the origin of the low-frequency fluctuations in the space, the origin of the low-frequency oscillations is not understood at present.