Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss.100...31s&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 100, no. 1-2, March 1984, p. 31-43.
Astronomy and Astrophysics
Astrophysics
Cosmic Plasma, Galactic Structure, Halos, Interstellar Gas, Magnetohydrodynamics, Dispersion, Linearization, Partial Differential Equations, Perturbation Theory, Wave Attenuation
Scientific paper
The behavior of dense astrophysical systems can be described by the magnetohydrodynamic equations involving gravitational potential. In this paper, the magnetohydrodynamic equations are solved in the wave form, and a general dispersion relation has been obtained. This dispersion relation has been used with simplifying assumptions, plausible for special regions of the system and results obtained have been shown to be able to interpret the property of the gas in those special regions. As an example, a region at a large distance from the center of the system is considered. The analysis indicates that instability exists at such a large distance, though it is assumed that the region is homogeneous. This explains the formation of corona, envelope of supergiant or galactic halo.
Bandyopadhyay Ranjini
Seal Parag
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