The radial variation of corotating energetic particle streams in the inner and outer solar system

Details The radial variation of corotating energetic particle streams in the inner and outer solar system The radial variation of corotating energetic particle streams in the inner and outer solar system

Oct 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.4723v&link_type=abstract

Journal of Geophysical Research, vol. 83, Oct. 1, 1978, p. 4723-4731.

Astronomy and Astrophysics

Astronomy

21

Energetic Particles, Solar Protons, Solar System, Solar Wind Velocity, Spaceborne Astronomy, Helios 1, Interplanetary Magnetic Fields, Particle Intensity, Pioneer 10 Space Probe, Pioneer 11 Space Probe, Radial Distribution

Scientific paper

Spacecraft observations of 0.9 to 2.2 MeV protons are used to evaluate the radial gradient of long-lived corotating energetic particle streams for several time periods from mid-1973 to mid-1976. New evidence is presented for a positive gradient between 0.3 and some 3-4 AU and a negative one beyond some 3-5 AU. The relation between the corotating events in the inner solar system and the accompanying interplanetary magnetic field and solar wind is examined. It is shown, independently of possible secondary latitudinal effects, that between 0.3 and 1 AU, in a region where gradients up to 300%/AU exist, the particle stream is propagating inside a fast solar wind stream in a region adjacent to low- and high-speed stream interactions.

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