Thermal-convective-instability of a stellar atmosphere in the presence of a nonlinear magnetic field

1992 ◽  
Vol 196 (1) ◽  
pp. 109-115
Author(s):  
A. A. Abdullah
Keyword(s):  
Magnetic Field ◽  
Convective Instability ◽  
Stellar Atmosphere

The Thermal-Convective Instability in a Stellar Atmosphere with Rotation and Hall Effects

1974 ◽  
Vol 29 (6) ◽  
pp. 867-869 ◽  
Author(s):  
R. C. Sharma
Keyword(s):  
Magnetic Field ◽  
Convective Instability ◽  
Stellar Atmosphere ◽  
Vertical Magnetic Field ◽  
Hall Effects ◽  
Monotonic Instability

The problem of thermal-convective instability of a stellar atmosphere is considered to include the effects due to rotation and Hall currents in the presence of a uniform vertical magnetic field The criterion for monotonic instability is found to be unchanged by the presence of rotation and Hall effects.

Thermosolutal-convective instability in a stellar atmosphere

1987 ◽  
Vol 8 (4) ◽  
pp. 305-314 ◽  
Author(s):  
R. C. Sharma ◽  
Bakshis Singh
Keyword(s):  
Convective Instability ◽  
Stellar Atmosphere

Homeotropic nematics heated from above under magnetic fields: convective thresholds and geometry

1983 ◽  
Vol 126 ◽  
pp. 13-26 ◽  
Author(s):  
J. Salan ◽  
E. Guyon
Keyword(s):  
Magnetic Field ◽  
Temperature Gradient ◽  
Magnetic Fields ◽  
Convective Instability ◽  
Geometric Form

The thermal convective instability of a nematic layer aligned perpendicular to horizontal plates displays original characteristics, due to the coupling of the nematic distortion with the temperature gradient; in particular the adverse temperature gradient threshold ΔTc can be modified by the application of a vertical (stabilizing) or horizontal (destabilizing) magnetic field. In addition, the application of a magnetic field H controls both the threshold of this instability and the geometric form of the instabilities above ΔTc.

Convective instability of a plasma slab in a magnetic field

1980 ◽  
Vol 24 (3) ◽  
pp. 479-482 ◽  
Author(s):  
K. Bhimsen ◽  
Shivamoggi ◽  
Mahinder ◽  
S. Uberoi
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Convective Instability ◽  
Ionization Rate ◽  
Plasma Slab ◽  
The Stability

Convective instability of a plasma slab (contained between two metal walls) subject to a longitudinal external magnetic field is studied. The results show that (i) increase in the ionization rate Z causes a reduction in the stability of the plasma; (ii) the instability persists in the limit k ⇒ 0.

On thermosolutal-convective instability in a stellar atmosphere

1986 ◽  
Vol 126 (1) ◽  
pp. 21-28 ◽  
Author(s):  
R. C. Sharma ◽  
J. N. Misra
Keyword(s):  
Convective Instability ◽  
Stellar Atmosphere
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