Conformo static charged dust distributions are investigated in the framework of general relativity. Einstein’s equations reduce to a nonlinear version of Poisson’s equation and Maxwell’s equations imply the equality of the charge and mass densities. An interior solution to the extreme Reissner-Nordström metric is given. Dust distributions concentrated on regular surfaces are discussed and a com...

Both compressive and rarefactive solitons are found to exist in the unmagnetized dusty plasma in presence of electrons’ drift velocity ( e v ). Comparision with the earlier findings shows that the factor which is responsible for the existence both compressive and rarefactive solitons is the electrons’ drift velocity ( e v ) in the plasma. It is observed that the compressive solitons exist for...

Starting from the exact microscopic equations for an unmagnetized dusty plasma, where the dust charge is regarded as a new degree of freedom of the system, we present a self-consistent set of equations that is suitable for weak turbulence analyses, where we have considered that the dust is electrically charged by absorption of plasma particles through inelastic collisions. In the quasilinear li...

Experimental and theoretical studies were conducted to investigate the control of charge and modification of nonlinear oscillations of externally injected dust particles in a dc discharge. The superposition of ac voltage on a dc cathode led to plasma density modulation, which brought about a drastic change of particle oscillation characteristics. Examples of the changes include disappearance of...

It is simulated the non-linear one-dimensional sheaths with dust particles of the given size, density and profile in an oblique magnetic field, using the modified PIC method with self-consistent dust particle charge. The Coulomb scattering and the collection of electrons and ions by dust particles are simulated by the Monte-Carlo method with 3D velocity distribution functions for electrons and ...

Article history: Received 23 May 2011 Accepted 6 June 2011 Available online 14 June 2011 Communicated by V.M. Agranovich Dust heating in dusty plasmas due to thermal electric field fluctuations and dust acoustic waves is examined. It is shown that dust particles acquire large random motion in fluctuating electric fields (within dust cloud) of background plasma causing dust electrostatic pressur...

We show that the dust devil parameterisation in use in most Mars Global Circulation Models (MGCMs) results in an unexpectedly high level of dust devil activity during morning hours. Prior expectations of the diurnal variation of Martian dust devils are based mainly upon the observed behaviour of terrestrial dust devils: i.e. that the majority occur during the afternoon. We instead find that lar...

A short discussion is provided on the hypothesis of strange quark dust of low specific charge in the terrestrial magnetosphere. We suggest by means of rough estimates the possible existence of a strangelet belt in the magnetosphere. PACS: xx.xx.Let1let2, xx.xx.Let1let2