Abstract
The properties of dust-Alfvén waves in self-gravitating partially ionized astrophysical dusty magnetoplasmas are investigated. Accounting for the self-gravitational and inter-particle collisional effects in a hydrodynamic model of multi-species collisional plasmas, we derive a dispersion relation which exhibits a linear coupling between the modified Alfvén waves and Jeans modes. The influence of the electron density depletion on the growth rate of gravitationally unstable coupled Alfvén-Jeans modes is numerically investigated.
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