Computer Science
Scientific paper
Oct 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.341..614s&link_type=abstract
Nature (ISSN 0028-0836), vol. 341, Oct. 19, 1989, p. 614-616.
Computer Science
33
Electron Distribution, Geomagnetic Tail, Ion Distribution, Mars Environment, Mars Probes, Planetary Magnetospheres, Energy Spectra, Magnetosheath, Solar Planetary Interactions, Soviet Spacecraft
Scientific paper
Preliminary results are presented of electron and ion measurements in the vicinity of Mars with the hyperbolic analyzer in the retarding potential model (HARP). HARP is a differential electrostatic analyzer, simultaneously covering eight directions arranged in a fan-shaped geometry, in the antisolar hemisphere. The angular resolution is about 20 deg, the energy resolution about 10 percent. During the first two elliptical orbits, electrons from 3.4 to 550 eV and ions from 0.25 to 550 eV were measured in 25 and 50 logarithmic energy steps, respectively. The energy distribution of electrons in the magnetosheath was found to be generally characterized by two distinct peaks. A fairly hot electron component was discovered in the plasma sheet of the areomagnetic tail.
Cravens Thomas E.
Diachkov A. V.
Gombosi Tamas I.
Kiraly Péter
Shutte N. M.
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