Physics
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250a.169v&link_type=abstract
In ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 1: Plasma and Gas p 169-173 (SEE N87
Physics
Halley'S Comet, Plasma Diagnostics, Plasma Sheaths, Vega Project, Bow Waves, Cometary Atmospheres, Ion Probes, Magnetohydrodynamic Flow, Shock Waves, Solar Wind
Scientific paper
Based on the PLASMAG-1 measurements on board VEGA-1 and -2 it is shown that besides the deceleration and thermalisation of the solar wind plasma behind the bow shock, two clearly separated populations of cometary ions are observed in the cometosheath region: the first one consists of ions being picked up in the vicinity of the point of observation. The energy of these ions coming from the solar direction decreases much faster than the energy of the solar wind ions. The second one consists of cometary ions being picked up by the solar wind far away from the point of observation. Considerable oscillations in the plasma flow direction occur in the cometosheath region.
Apáthy I.
Gombosi Tamas I.
Gringauz K. I.
Lezhen L. A.
Remizov A. P.
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