Other
Scientific paper
Oct 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...225..259s&link_type=abstract
Astrophysical Journal, Part 1, vol. 225, Oct. 1, 1978, p. 259-274.
Other
46
Magnetic Field Configurations, Magnetohydrodynamic Flow, Meridional Flow, Solar Corona, Stellar Models, Diagrams, Equations Of Motion, Lorentz Force, Mathematical Models, Nonlinear Equations, Solar Atmosphere, Surges
Scientific paper
The propagation of coronal transients through the lower corona in the meridional plane is studied on the basis of numerical solutions of the time-dependent MHD equations of motion. The importance of the topology of the initial coronal magnetic field is demonstrated by considering two configurations: one which is essentially radial (open), and another which is essentially parallel to the solar surface (closed). The effect of coronal field magnitude is investigated by using values for the beta parameter of 1 and 0.1 at the coronal base. The consequences of including radiative losses and of varying the polytropic index are also considered. The solar event is simulated by a step-function increase in the pressure at the base of an initially hydrostatic atmosphere by a factor of 5, lasting for a period of 5 min.
Dryer Murray
Steinolfson Richard S.
Tandberg-Hanssen Einar
Wu Shi Tsan
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