Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm52b04p&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SM52B-04
Astronomy and Astrophysics
Astrophysics
0654 Plasmas, 2164 Solar Wind Plasma, 2435 Ionospheric Disturbances, 2732 Magnetosphere Interactions With Satellites And Rings, 7855 Spacecraft Sheaths, Wakes, Charging
Scientific paper
Three-dimensional collisional simulations of time-dependent stratifications and flute structure of plasma flows and wakes are performed in external magnetic fields based on the kinetic approach. The model Boltzmann equation solved taking into account collisions between the plasma ions, their interactions with ambient neutral particles and effects of external magnetic fields. Using this solution the analytical and numerical results are obtained, which describe developing magnetic field aligned stratifications of plasma flows in Space and the upper ionosphere. For magnetic field aligned drifting velocity of the plasma flows, formation of flute structures along the edges of the flows is obtained analytically and numerically. Using the image method ([1]-[3]) the wakes of different objects in the ionosphere and Space are simulated. Different kinds of interactions of the ambient particles with object surfaces are considered as absorption, direct and diffuse reflection. The results describe the flute structure of wakes of objects in motion along the external magnetic fields and stratifications of wakes in different cases. The presented research can be developed to simulations of spacecraft sheaths, wakes, charging and magnetosphere interactions with satellites. References [1] Ponomarjov M.G., Imaginary emission method for modeling disturbances of all magnetoplasma species: Reflecting and absorbing objects in motion through rarefied plasma at different angles to the ambient magnetic field, Physical Review E, 54, 5591-5598,1996; [2] Ponomarjov M.G., Disturbances of the ambient magnetoplasma due to interactions with the object surfaces. Imaginary emission method. Far-wake of objects moving through a rarefied plasma at different angles to the ambient magnetic field, Planetary and Space Science, 43, 1419-1427, 1995; [3] Ponomarjov,M.G., Space flows and disturbances due to bodies in motion through the magnetoplasma, Astrophys. Space Sci., 274, 423-429, 2000.
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