On thermal-convective instability in a stellar atmosphere with finite Larmor radius and Hall effects

1974 ◽  
Vol 31 (1) ◽  
pp. 43-47 ◽  
Author(s):  
R. C. Sharma ◽  
Kirti Prakash
Keyword(s):  
Convective Instability ◽  
Stellar Atmosphere ◽  
Larmor Radius ◽  
Finite Larmor Radius ◽  
Hall Effects

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.

scholarly journals Finite Larmor Radius and Hall Effects on Thermal Instability of a Plasma in Porous Medium

1994 ◽  
Vol 49 (4-5) ◽  
pp. 547-551 ◽  
Author(s):  
R. C. Sharma ◽  
V. K. Bhardwaj
Keyword(s):  
Porous Medium ◽  
Thermal Instability ◽  
Wave Number ◽  
Larmor Radius ◽  
Stationary Convection ◽  
Number Range ◽  
Finite Larmor Radius ◽  
Hall Effects ◽  
Wave Number Range ◽  
Medium Permeability

Abstract The thermal instability of a plasma in a porous medium in the presence of a finite Larmor radius (FLR) and Hall effects is considered. Oscillatory m odes due to the presence of a magnetic field (and hence the presence of FLR and Hall effects) are introduced. For stationary convection, the FLR may have a stabilizing or destabilizing effect, but a completely stabilizing one for a certain wave-number range. Similarly, the Hall currents may have a stabilizing or destabilizing effect but a completely stabilizing one for the same wave-number range under certain condition, whereas the medium permeability always has a destabilizing effect for stationary convection.

Finite Larmor radius and Hall effects on thermosolutal instability of a plasma

1990 ◽  
Vol 168 (2) ◽  
pp. 331-339
Author(s):  
K. C. Sharma ◽  
Urvashi Gupta ◽  
D. V. S. Pathania
Keyword(s):  
Larmor Radius ◽  
Finite Larmor Radius ◽  
Hall Effects
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