The magnetic and thermodynamical structure of a coronal hole

A nonpolytropic model of a polar coronal hole of 2-5 solar radii constructed. The main assumptions are: (1) the magnetic structure of the sun can be described by a combination of dipole-like and radial fields; (2) in the magnetically dominated region rho(nu sq/2) much less than B sq/8 pi the influen...

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Bibliographic Details
Published in:Solar physics 1985-06, Vol.97 (2), p.251-266
Main Authors: Osherovich, V. A., Gliner, E. B., Tzur, I., Kuhn, M. L.
Format: Article
Language:English
Subjects:
Astronomy
Corona. Coronal loops, streamers, and holes
Earth, ocean, space
Exact sciences and technology
Solar Physics
Solar system
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Summary:A nonpolytropic model of a polar coronal hole of 2-5 solar radii constructed. The main assumptions are: (1) the magnetic structure of the sun can be described by a combination of dipole-like and radial fields; (2) in the magnetically dominated region rho(nu sq/2) much less than B sq/8 pi the influence of the outflow on the magnetic structure is negligible. The magnetic and thermodynamic structures are obtained by solving the force balance equation for plasma with the observationally derived electron density. Profiles of velocities in the acceleration regime are presented and the influence of the outflow on the thermodynamic structure of the solar corona above the polar region is discussed.
ISSN:0038-0938
1573-093X
DOI:10.1007/BF00165989