Physics
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250a.109k&link_type=abstract
In ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 1: Plasma and Gas p 109-114 (SEE N87
Physics
1
Bow Waves, Energy Spectra, Halley'S Comet, Ion Distribution, Shock Waves, Interplanetary Magnetic Fields, Ion Temperature, Magnetic Field Configurations, Particle Flux Density, Plasma Diagnostics, Plasma-Electromagnetic Interaction, Space Plasmas, Vega Project
Scientific paper
The TUNDE-M experiment on Vega-1 detected energetic cometary ions as far as 10 million km from comet Halley. The measured ion fluxes increase as the radial distance to the nucleus decreases. Sharp enhancements spaced at 4hr intervals are superimposed on the general increase of the ion fluxes on the inbound leg of Vega-1. No obvious correlations between the ion fluxes and the interplanetary field direction are found. Distribution functions in the solar wind reference frame were derived from measured counting rates. The distributions are approximately Maxwellian for energies about 100 keV and the derived temperatures vary from 20 keV for large radial distances (r = 10 million km) to 4 keV at 1.5 million km before the bow shock (r = 2.5 million km).
Afonin Valeri
Cravens Thomas E.
Erdoes G.
Eroshenko E. G.
Gan Liping
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