Physics
Scientific paper
Dec 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....9213641w&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Dec. 1, 1987, p. 13641-13646.
Physics
17
Lorentz Force, Magnetic Field Configurations, Magnetohydrodynamic Waves, Solar Corona, Stellar Mass Ejection, Boundary Value Problems, Solar Maximum Mission
Scientific paper
A model describing the quasi-static evolution of a coronal helmet streamer as it is inflated with excess mass was developed. The model produces a sequence of magnetostatic equilibria for a magnetic field configuration that includes a current sheet in the equatorial plane as well as distributed volume currents. The equilibrium solutions are given as Legendre series, and the height at which the current sheet starts is adjusted iteratively to maintain constant flux in the closed-field region. The model was fit to SMM coronagraph/polarimeter observations showing the slow growth of a coronal streamer prior to its disruption in association with an eruptive prominence and mass ejection on August 18, 1980. The results suggest that the early phase of this event is consistent with the quasi-static evolution of the corona in response to the slow addition of mass to the closed-field region of the streamer.
Conover Charles
Illing Rainer M. E.
Wolfson Richard
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