Effects of Coriolis Force on the Equilibrium Structures of Rotationally and Tidally Distorted Stellar Models.

Abstract

The present thesis deals with the problems of determining the effects of rotation and/or tidal distortions on the equilibrium structure of gaseous spheres in the presence of coriolis force. Such a study has practical relevance in astrophysics where it is expected to help in understanding the problems of stellar stability and stellar variability of rotating stars as well as of stars in binary and multiple systems. This thesis consists of two chapters. Chapter one is introductory in which a brief explanation of astrophysical significance of the theoretical study of the problem of determining the effects of rotation and/or tidal distortions on the equilibrium structures of gaseous spheres and averaging technique of Kippenhahn and Thomas has been discussed. Certain results obtained by Mohan, Saxena and Agarwal and a brief survey of literature have been also presented in this chapter. In chapter two, effect of coriolis force on the equilibrium structures of rotationally and tidally distorted stellar models is presented and applied to the Prasad and Roche model of stars. Analysis of results have also been discussed in this chapter.