Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.203....1c&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 203, no. 1, p. 1-22.
Astronomy and Astrophysics
Astrophysics
2
Longitudinal Waves, Space Plasmas, Temperature Gradients, Wave Dispersion, Wave Propagation, Cartesian Coordinates, Conservation Equations, Magnetohydrodynamic Stability, Mass Flow, Perturbation
Scientific paper
The effect of temperature gradients responsible for MHD wave instabilities is studied. A general dispersion relation (GDR) is derived using the Cartesian coordinate system under the assumption that perturbations occur in a finitely conducting, self-gravitating, nonrelativistic hydromagnetic medium with temperature gradient and heat-energy transport into it. Data obtained suggest that in the central region of the Galaxy the temperature gradient could be one of the major causes of the mass-outflow along the direction perpendicular to the Galactic plane. Outside the central region of the Galaxy there may be long-term consequences of the mass-outflow like Halo formation.
Bondyopadhaya Ramaprosad
Chakraborty Somendra Nath
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