Physics
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.2950e&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 91, March 1, 1986, p. 2950-2960. Research supported by the Smithsonian In
Physics
54
Magnetohydrodynamic Waves, Solar Corona, Solar Wind, Two Fluid Models, Lyman Alpha Radiation, Plasma Density, Plasma Temperature, Solar Protons, Solar Wind Velocity, Spectral Line Width, Ultraviolet Spectra
Scientific paper
The effects of Alfvén waves from the inner corona on the solar wind density profile, flow velocity and on the random motion of protons are studied. Different base densities, temperatures, and wave velocity amplitudes, as well as different flow geometries, are considered. The model calculations are compared to simultaneous observations of the electron density profile and the resonantly scattered Lyman alpha line. Present observations, out to 4 solar radii, can be used to place limits on the coronal base density and temperature, and put an upper limit on the wave amplitude. It is pointed out that future observations of the electron density and the Lyman alpha line, out to larger heliocentric distances, and of lines from heavier elements, should be used to place more stringent constraints on the amplitudes of MHD waves in the corona.
Esser Ruth
Leer Egil
Rifai Habbal Shadia
Withbroe George L.
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