Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...187..287g&link_type=abstract
Astronomy and Astrophysics, Vol.187, NO. 1+2/NOV, P. 287, 1987
Astronomy and Astrophysics
Astrophysics
11
Scientific paper
Measurements of electron spectra, as obtained by the Plasmag- 1 experiment on board Vega 2 in the vicinity of comet Halley, are presented. It is shown that the temperature for thermal electrons gradually decreases when the comet is approached from about 4 × l05 K behind the cometary bow shock to about 2 × l05 K at the cometopause. In the region inside the cometopause a fast increase in the flux of energetic electrons of about 1 keV energy is observed. Various possibilities are discussed regarding the differences in the electron spectra measured by Vega 2 and Giotto, respectively.
Apáthy I.
Gombosi Tamas I.
Gringauz K. I.
Klimenko I. N.
Remizov A. P.
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