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The 1980 rocket coronagraph measurements of the solar wind acceleration regionSpectroscopic measurements of temperatures, densities and flow velocities in the solar wind acceleration region provide critical empirical constraints on solar stellar wind theory. Preliminary results of an analysis of H I Lyman-alpha and white light measurements made on 16 February 1980 in a polar coronal region are reported. The hydrogen kinetic temperatures in the observed region were found to be nearly constant with T sub HI approximately equals 10 degrees K at heliocentric distances between 1.5 and 4 solar radii. The outflow velocities were found to be subsonic indicating that the critical point in the observed region was located at r approximately greater than 4 solar radii.
Document ID
19830012585
Document Type
Conference Paper
Authors
Withbroe, G. L. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Kohl, J. L. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Munro, R. H. (High Altitude Observatory Cambridge, MA, United States)
Weiser, H. (Harvard-Smithsonian Center for Astrophysics)
Date Acquired
August 11, 2013
Publication Date
January 1, 1981
Publication Information
Publication: Smithsonian Astrophysics Observatory 2nd Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, Vol. 1
Subject Category
SOLAR PHYSICS
Funding Number(s)
CONTRACT_GRANT: NSG-5128
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19830012575Analytic PrimarySecond Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, volume 1