Transport Phenomena In Stellar Interiors

Abstract

As stellar astrophysics has developed, attention has increasingly become focused on the details and re nements that make the current models of stars so quantitatively accurate. Despite the fact that, there is an overall progress in astronomy and astrophysics, several problems ranging from observational limitations to theoretical developments have remained unresolved. For example, the origin, evolution and structure of stars, galaxies and inter- stellar media are not yet fully developed. However, according to the current astrophysical understanding, most of the substances that make up our world are formed in stars. Mean- while, the process of star formation is inextricably tied up with the formation and early evolution of planetary systems. It is generally believed that stars are formed from dust molecular clouds made up of mostly from hydrogen gas. While stars burning phase is be- lieved to be in plasma state at large involving nulear fusion at the core.This thesis work focuses on transport phenomena during the burning stage of a star within its interior which is one of the active research area. Our approach is a pure theoretical analysis where the relevant parameters are derived from the classical Boltzman transport equations. The result indicates that the current model seems to handle medium size stars like our sun but the complicated reletivistic stars such as super gaint single stars, binary stars and accreting stars need further developments.