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Vol.3 , No. 5, Publication Date: Sep. 21, 2016, Page: 57-65
 corrections, finite electron inertia and radiative heat-loss function on the thermal instability of an infinite homogeneous, viscous plasma incorporating the effects of thermal conductivity, permeability has been investigated. A general dispersion relation is derived using the normal mode analysis method with the help of relevant linearized perturbation equations of the problem. The wave propagation is discussed for transverse direction to the external magnetic field and the condition of modified thermal instabilities and stability are discussed in different cases. It is found that the thermal instability criterion is get modified into radiative instability criterion because of inclusion of radiative heat-loss functions. The viscosity of the medium removes the effect of FLR corrections from the condition of radiative instability. Numerical calculation shows stabilizing effect of heat-loss function, FLR corrections, viscosity and destabilizing effect of finite electron inertia on the thermal instability.&picture=http://www.aascit.org/aascit/decorators/img/journal/909.jpg)
| [1] | Sachin Kaothekar, Department of Physics, Mahakal Institute of Technology, Madhya Pradesh, India. |
For the formation of molecular clouds, the effects of finite ion Larmor radius (FLR) corrections, finite electron inertia and radiative heat-loss function on the thermal instability of an infinite homogeneous, viscous plasma incorporating the effects of thermal conductivity, permeability has been investigated. A general dispersion relation is derived using the normal mode analysis method with the help of relevant linearized perturbation equations of the problem. The wave propagation is discussed for transverse direction to the external magnetic field and the condition of modified thermal instabilities and stability are discussed in different cases. It is found that the thermal instability criterion is get modified into radiative instability criterion because of inclusion of radiative heat-loss functions. The viscosity of the medium removes the effect of FLR corrections from the condition of radiative instability. Numerical calculation shows stabilizing effect of heat-loss function, FLR corrections, viscosity and destabilizing effect of finite electron inertia on the thermal instability.
Keywords
Molecular Cloud Formation, Thermal Instability, Magnetohydrodynamics (MHD), Finite Electron Inertia, FLR Corrections
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