A theoretical investigation has been made of two new ultra-low-frequency electrostatic modes, namely, dust-cyclotron mode and dust-lower-hybrid mode, propagating perpendicular to the external magnetic field, in a self-gravitating magnetized two fluid dusty plasma system. It has been shown that the effect of the self-gravitational force, acting on both dust grains and ions, significantly modifie...

as widespread deserts is located in west and southwest of iran plateau, dust storms form due to west andsouthwest systems over syria or iraq as well as arabian peninsula. these systems severely affect west and southwestregions. sometimes the fine dusts transmit to central, north east, and east regions. in this study for investigating dustysynoptical patterns, meteorological data at 5 synoptic s...

Dusty plasmas are susceptible to the formation of a ‘‘void,’’ a centimeter-size region within the plasma that is free of dust particles. The boundary between the dust-free plasma ~void! and the dusty plasma is typically quite sharp. Praburam and Goree first reported the appearance of a spoke-shaped, dust-free region in a cloud of 100-nm carbon particles in a radio-frequency discharge formed bet...