Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...232l..69c&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 232, Aug. 15, 1979, p. L69-L73. Research supported by the Consiglio
Astronomy and Astrophysics
Astrophysics
39
Dynamic Response, Magnetohydrodynamic Stability, Solar Magnetic Field, Solar Prominences, Thermal Instability, Eigenvalues, Perturbation Theory, Plasma Density, Plasma Pressure, Plasma Temperature, Pressure Effects
Scientific paper
The dynamics of the thermal plasma instability in a nonuniform magnetic field, involved in the formation of solar filaments or prominences in sheared coronal magnetic fields, are examined. An expression is derived for a perturbation of equilibrium conditions corresponding to the physical configuration to observed filaments, which allows the dynamic response of plasma pressure, density and temperature to optically thin radiation and field-collimated thermal conduction to be determined. Numerical solutions to the equations demonstrate the formation of characteristic knife blade condensations and can predict the initial temporal and spatial scales of coronal filament appearance.
Chiuderi Claudio
van Hoven Gerard
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