نقل الطاقة بالحمل والإشعاع: ظاهرة التراكم حول ثقب أسود

Abstract

Accretion disks are of great importance in the study of physical and astronomical phenomena. The aim of this work is to study the behavior of energy equations with convection and radiation around a black hole in a state of thermal equilibrium. The study was divided into two parts: a theoretical aspect that includes a general summary about black holes and accretion disks, how they are formed and their types, and the basic equations for accretion disks.The second section was about energy transfer by convection and radiation in a state of thermal equilibrium, based on the energy conservation equation, finding its solutions and drawing them using the MATLAB program and discussing them based on previously published works.