Low energy ions in corotating interaction regions at 1 AU Observations

Details Low energy ions in corotating interaction regions at 1 AU Observations Low energy ions in corotating interaction regions at 1 AU Observations

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984p%26ss...32.1179r&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 32, Sept. 1984, p. 1179-1193.

Computer Science

27

Ion Temperature, Plasma Diagnostics, Plasma Heating, Plasma-Particle Interactions, Rotating Plasmas, Solar Wind Velocity, Coronal Holes, Data Reduction, Interplanetary Space, Librational Motion, Solar Magnetic Field, Space Exploration

Scientific paper

The spacecraft ISEE-3 was launched in August 1978 and subsequently placed in orbit about the sun-earth L1 libration point, where it continuously monitored the particles and fields in the interplanetary space until mid-1982. The ISEE-3 Energetic Proton Anisotropy Spectrometer makes three-dimensional intensity measurements of 35-1600 keV, Z equal to or greater than 1 ions. This data is used in conjunction with simultaneous solar wind plasma and magnetic field data from the same spacecraft to study the properties of ions in interaction regions lying at the leading edges of nine corotating high speed solar wind streams observed during October 1978-July 1979. Seven streams have an enhancement of less than 300 keV ions in the compressed fast stream plasma between the stream interface and interaction region trailing edge. These enhancements are associated with plasma heating to above 300,000 K, have soft spectra (spectral index about 4.5-6.0) and in five cases show antisolar streaming in the solar wind frame.

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