Pickup ions in the unshocked solar wind at Comet Halley

Details Pickup ions in the unshocked solar wind at Comet Halley Pickup ions in the unshocked solar wind at Comet Halley

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94..185k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Jan. 1, 1989, p. 185-196.

Physics

10

Halley'S Comet, Ion Motion, Positive Ions, Solar Wind, Distribution Functions, Ion Density (Concentration), Magnetic Field Configurations, Molecular Gases, Comets, Halley, Ions, Solar Wind, Vega 1 Mission, Spacecraft Observations, Tunde-M Instrument, Comet Nuclei, Flux, Distance, Neutral Particles, Density, Distribution, Energy, Temperature, Diagrams, Calculations, Magnetic Fields, Structure

Scientific paper

Data obtained by the Tunde-M experiment aboard the Vega 1 spacecraft indicate that the energetic ion flux begins to increase at a distance of about 10 to the 7th km outside Halley's bow shock, with a number of large enhancements superimposed on the general flux level. The energy spectra of ions were determined in the solar wind reference frame by fitting Maxwellian distributions to the ion fluxes in the relevant energy range, between about 90 and 120 keV; they indicate that the temperatures of the Maxwellian at cometocentric distances of 1-2 million km are similar to the temperatures measured just outside the bow shock of Comet G-Z.

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