Physics
Scientific paper
Oct 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.341..616a&link_type=abstract
Nature (ISSN 0028-0836), vol. 341, Oct. 19, 1989, p. 616-618. Research supported by the Irish National Board for Science and Tec
Physics
15
Magnetic Field Configurations, Mars Environment, Planetary Magnetic Fields, Spacecraft Instruments, Ion Distribution, Particle Energy, Planetary Magnetospheres, Soviet Spacecraft, Spectral Energy Distribution
Scientific paper
The twin-telescope particle-detector system, SLED, aboard Phobos 2 recorded flux enhancements in the range 30-350 keV in the same general location in the close environment of Mars, over eight days at about 900 km altitude in three successive elliptical orbits. Here, possible interpretations of these observations are presented. Energy-related particle shadowing by the body of Mars was also detected, and the data indicate that this effect occurred in less than 20 percent of the 114 circular orbits around Mars because of the nutation of the spacecraft. The influence of magnetic fields in allowing particles to reach the detector under potentially screened conditions is discussed.
Afonin Valeri
Gringauz K.
Kecskemety Károly
Keppler Erhard
McKenna-Lawlor Susan
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