Physics
Scientific paper
Jul 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981chjss...1...21z&link_type=abstract
Chinese Journal of Space Sciences, vol. 1, July 1981, p. 21-30. In Chinese, with abstract in English.
Physics
Coronal Holes, Magnetohydrodynamic Stability, Plasma Temperature, Solar Wind Velocity, Temperature Profiles, Plasma Acceleration, Solar Corona, Solar Physics
Scientific paper
Based on the assumptions that the propagation of the Alfven fluctuations in coronal holes is undamped and the reasonable coronal temperatures lie in the range 900,000-2,500,000 K, the propagation characteristics of the Alfven fluctuations in a rapidly diverging flow tube are derived, and the acceptable temperature profiles in a coronal hole are determined. The relevant Alfven fluctuation energy flux density at coronal base is found to be between 500,000-1,000,000 ergs/sq cm per sec, implying that the acceleration by such Alfven fluctuations is effective and sufficient for the coronal plasma to become the high speed wind streams.
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