Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989azh....66..832b&link_type=abstract
Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 66, July-Aug. 1989, p. 832-841. In Russian.
Astronomy and Astrophysics
Astronomy
6
Magnetohydrodynamic Flow, Solar Corona, Solar Corpuscular Radiation, Solar Cosmic Rays, Stellar Models, Brightness Distribution, Density Distribution, Magnetohydrodynamics, Solar Wind
Scientific paper
A set of ground-based and spaceborne white-light observations of large coronal rays at distances between 4 and 25 solar radii is discussed. The observed brightnesses agree with those calculated for a cylindrical structure with a hydrostatic density distribution at the coronal plasma parameters T = 1,600,000 K and n(0) = 1-2 X 10 to the 9th/cu cm for different coronal rays. Between 5 and 10 solar radii, the observed brightness of particular streamers appears to decrease with distance faster than in the hydrostatic model. Because the hydrostatic model is physically unrealistic in the corona external layers, a model with Parker-type plasma outflow in a weakly diverging structure is considered.
Badalyan Olga G.
Livshits Moisey A.
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