Physics
Scientific paper
Aug 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.1743g&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 16, p. 1743-1746
Physics
17
Flux Density, Heliosphere, Plasma Density, Plasma Pressure, Plasma Temperature, Solar Cycles, Solar Wind, Variations, Dynamic Pressure, Kinetic Energy, Pioneer 10 Space Probe, Pioneer 11 Space Probe, Thermal Energy, Voyager 2 Spacecraft
Scientific paper
Solar wind measurements from the Pioneer 10, Pioneer 11, and Voyager 2 spacecraft are now available through mid-1993. These measurements extend our knowledge of the outer heliosphere to heliographic latitudes that range between -10 deg and 17.5 deg, and provide insight into the variation with solar cycle of the structure of the distant solar wind. The average temperature, mass flux density, dynamic pressure, and kinetic and thermal energy flux densities varied strongly with solar cycle at the latitude of Pioneer 11 (10 deg to 17 deg N), but were almost constant in the vicinity of the solar equator. These parameters may have increased with latitude between the solar equator and 17 deg N. There was also a short-term variation in average solar wind parameters near the time of the 1986 solar minimum, when the inclination of the heliospheric current sheet dropped below the latitude of Pioneer 11.
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