A theory of local and global processes which affect solar wind electrons. II - Experimental support

Details A theory of local and global processes which affect solar wind electrons. II - Experimental support A theory of local and global processes which affect solar wind electrons. II - Experimental support

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.6603s&link_type=abstract

Journal of Geophysical Research, vol. 84, Nov. 1, 1979, p. 6603-6620.

Physics

52

Coulomb Collisions, Electron Distribution, Interplanetary Medium, Satellite Observation, Solar Wind Velocity, Electron Density (Concentration), Flux (Rate), Kinetic Energy, Magnetohydrodynamic Stability, Plasma Dynamics, Spacecraft Instruments

Scientific paper

Strong observational support from data obtained on three different satellites and reported by three independent experimental groups is presented for all of the theoretically predicted correlations of a previous paper concerning local and global processes that affect solar-wind electrons. Specifically, it is shown that: (1) subthermal electrons behave most nearly as a classical gas; (2) the solar-wind extrathermal fraction of the electron density is anticorrelated within steady-state stream patterns with the local bulk speed; (3) the extrathermal electrons form a spectrally distinguishable subpopulation whose differential 'temperature' is anticorrelated with the local bulk speed; (4) the heat flux carried by electrons is anticorrelated with the bulk speed; and (5) the extrathermal 'temperature' is nearly independent of radius in the inner heliosphere. It is concluded that the previously discussed global and local Coulomb collisional effects are essential aspects of the solar-wind plasma as it is observed.

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