Gravitational instability of suprathermal hydromagnetic plasma |
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| Authors: | G L Kalra V Ghildyal |
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| Institution: | (1) Department of Physics & Astrophysics, University of Delhi, 110 007 Delhi, India |
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| Abstract: | The paper models the suprathermal plasma as the concatenation of two different gravitating fluids each having its own separate density and pressure. One of the fluids has isotropic pressure while the other has an anisotropic pressure. The system is subjected to a uniform magnetic field which is frozen with the fluids. The gravitational instability of the model for low frequency plane waves has been investigated in a linear framework for plasma parameters relevant to the spiral arms of the galaxy and the cosmic gas clouds. The analysis shows that the wavelength of the instability is strongly dependent upon the anisotropy of the non-thermal plasma. |
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