Physics
Scientific paper
Mar 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995adspr..15..323s&link_type=abstract
Advances in Space Research (ISSN 0273-1177), vol. 15, no. 8-9, p. 323-327
Physics
Ion Beams, Magnetic Field Configurations, Magnetosheath, Plasma Turbulence, Shock Fronts, Shock Waves, Upstream, Data Correlation, Electrostatic Waves, Ion Distribution, Velocity Distribution, Wave-Particle Interactions
Scientific paper
The previous bow shock studies show that in all regions with a high level of magnetic field fluctuations the ion distribution function consists of the nearly Maxwellian core and many narrow beams with different velocities. These turbulent regions can be found upstream of the oblique shocks as well as in downstream of the shocks regardless of their classification. The present paper is devoted to a detail study of these regions. Main attention is paid to the origin, movement and distribution of these beams in the velocity space as well as to the correlation with the magnetic field fluctuations. The electric field intensity is estimated based on the beam velocity changes. In the downstream region the presence of the beams leads to the increase of the temperature due to a strong wave-particle interaction but in the upstream region this increase of the overall temperature has not been found. This effect is also discussed in the paper.
Nemecek Zdenek
Safrankova Jana
Santolik Ondrej
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