Observations of plasma bulk parameters and the energy balance of the solar wind between 1 and 10 AU

Details Observations of plasma bulk parameters and the energy balance of the solar wind between 1 and 10 AU Observations of plasma bulk parameters and the energy balance of the solar wind between 1 and 10 AU

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89..775g&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Feb. 1, 1984, p. 775-785.

Physics

38

Plasma Density, Plasma Diagnostics, Solar Wind Velocity, Conservation Laws, Distribution Functions, Heat Flux, Mass Flow, Radial Distribution, Solar Protons, Voyager 1 Spacecraft

Scientific paper

The solar wind bulk velocity, the product of the mass flux and the square of the heliocentric distance, and the product of the density and the square of the heliocentric distance, are all found not to vary with heliocentric distance in spacecraft observations of the radial evolutions of several solar wind bulk parameters in the 1-10 AU range. Density's anticorrelation with velocity vanishes at greater distances from the sun than 1 AU, while solar wind bulk velocity and thermal speed are correlated over the entire 1-10 AU range. Thermal process heating, bulk kinetic energy conversion to thermal energy, and electron heat conduction, are considered as mechanisms accounting for the radial variation of the solar wind proton temperature over 1-10 AU. It is found that the addition of a heat flux due to heat conduction is a persuasive alternative.

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