Construction of New Anisotropic Model of Ring Galaxies

Mariam Sultana, Muhammad Khalid


The theory of gravitational stability is necessary in order to understand physics of collision-less material of the Universe i.e. galaxies. Nuritdinov took a decisive step in this direction by constructing isotropic non-linear, non-stationary model which describes the role of gravitational instability in galaxy/galaxies formation process. Since, isotropic model is a somewhat as idealized picture, the question arises of also examining anisotropic model in the initial state with non-stationary condition. In this paper, we construct a new anisotropic model for ring galaxies. Ring galaxies are very important, as ring formation involves the entire history of galaxies. The stability of ring oscillation mode can be expressed in the form of critical value of pulsation, amplitude and degree of rotation for anisotropic model.

Key Words: Pulsation, Non-stationary, Asymmetric Oscillation, Virial Ratio, Critical Value

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ISSN (Paper)2224-719X ISSN (Online)2225-0638

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