Other
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...338.1171b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 338, March 15, 1989, p. 1171-1175.
Other
6
Computerized Simulation, Coronal Holes, Magnetohydrodynamics, Skylab Program, Solar Corona, Interplanetary Medium, Solar Magnetic Field, Solar Wind
Scientific paper
The nonradial divergence of coronal holes near the sun seems to be a general feature of both polar and nonpolar holes. The geometry of the Skylab north-polar hole modeled by Munro and Jackson (1977) has been extensively used as an imposed condition in many theoretical models for coronal holes, and several authors have tried to reproduce it by means of self-consistent models (starting from the conditions at the base of the corona). In such self-consistent models, however, the divergence obtained for the holes, although greater than radial, is smaller than the one obtained by Munro and Jackson. This paper calls attention to the fact that another border for the same hole, different from Munro and Jackson's near the sun, has also been reported, and shows that when the alternative border is considered it is quite satisfactorily reproduced by the MHD simulation made by Robertson (1983).
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