Distribution of solar wind angular momentum between particles and magnetic field - Inferences about the Alfven critical point from HELIOS observations

Details Distribution of solar wind angular momentum between particles and magnetic field - Inferences about the Alfven critical point from HELIOS observations Distribution of solar wind angular momentum between particles and magnetic field - Inferences about the Alfven critical point from HELIOS observations

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.5386m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, July 1, 1984, p. 5386-5394. Research supported by the Bundesministeri

Physics

Plasma Physics

33

Angular Momentum, Particle Motion, Solar Wind Velocity, Velocity Distribution, Helios 1, Helios 2, Magnetohydrodynamic Waves, Plasma Physics, Solar Magnetic Field

Scientific paper

The authors first discuss theoretically the relative importance and the behavior of the two basic terms adding to the total angular momentum flux, the angular momentum of the particles and of the magnetic field stresses, respectively. Second, they analyze these two quantities with respect to their dependence on heliocentric distance by using the Helios 1 and 2 plasma and interplanetary magnetic field observations between 0.3 and 1 AU. Applying these results as well as various combinations of the constants of motion for the solar wind and their observational constraints, as deduced earlier by Marsch and Richter (1984), the authors finally present various methods (1) to derive the values of several characteristic solar wind plasma and magnetic field parameters at the Alfvén critical points, (2) to estimate their locations above the solar surface, and (3) to obtain the radial slope of the associated solar wind velocity profiles for the three solar wind classes separately.

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