On the convective instability of finitely conducting viscous model chromosphere

Details On the convective instability of finitely conducting viscous model chromosphere On the convective instability of finitely conducting viscous model chromosphere

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ap%26ss..68...11s&link_type=abstract

Astrophysics and Space Science, vol. 68, no. 1, Mar. 1980, p. 11-18.

Astronomy and Astrophysics

Astrophysics

Atmospheric Models, Chromosphere, Convective Flow, Magnetohydrodynamic Stability, Viscous Flow, Hall Effect, Magnetic Fields, Radiative Recombination, Schwarzschild Metric, Thermal Stability

Scientific paper

The convective stability of a simple model chromosphere, consisting of protons, electrons and hydrogen atoms in the ground state, has been studied in the presence of a vertically upward uniform magnetic field to include the effects of FLR, Hall-currents, finite conductivity and ionization. The ionization in the chromosphere is collisional and the recombination is radiative. It is found that the Schwarzchild criterion should necessarily be satisfied for the stability together with the condition that the kinematic viscosity is greater than two times the gyroviscosity.

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