Physics
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.7480z&link_type=abstract
Journal of Geophysical Research, vol. 86, Sept. 1, 1981, p. 7480-7486.
Physics
4
Coronal Holes, Kinetic Energy, Magnetohydrodynamic Waves, Plasma Dynamics, Solar Wind Velocity, Energy Transfer, Plasma Heating, Radiant Flux Density, Solar Physics, Temperature Profiles
Scientific paper
The possible Alfven wave energy flux density existing in a coronal hole is analyzed and discussed in relation to the energy balance giving rise to high-speed solar wind streams from coronal holes. Under the assumption of the undamped propagation of Alfven waves between 2 and 5 solar radii, the Munro-Jackson (1977) model of coronal hole density is used to integrate the steady magnetohydrodynamic expansion equations of the coronal plasma along the radial flux tube, and compared with observations of the temperature profile and energy balance to obtain a value of less than 900,000 erg/sq cm per sec for the Alfven wave energy flux density at the coronal base. It is noted that extended heating above 2 solar radii is necessary to maintain the temperature maximum and to supply energy for the formation of high-speed streams, and may contribute as much as or more than Alfven waves to their energy.
No associations
LandOfFree
Energetics of coronal hole expansion does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Energetics of coronal hole expansion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energetics of coronal hole expansion will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1514705