The stability of a shearing viscous star with an electromagnetic field

作     者：M. Sharif M. Azama 

作者机构：Department of Mathematics University of the Punjab Quaid-e-Azam Campus Lahore-54590 Pakistan Division of Science and Technology University of Education Township Campus Lahore-54590 Pakistan 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2013年第22卷第5期

页      面：175-181页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 

基　　金：the Higher Education Commission  Islamabad  Pakistan  for its financial support through the Indigenous Ph.D. 5000 Fellowship Program Batch-Ⅶ 

主　　题：gravitational collapse electromagnetic field instability 

摘      要：We analyze the role of the electromagnetic field for the stability of a shearing viscous star with spherical symmetry. Matching conditions are given for the interior and the exterior metrics. We use a perturbation scheme to construct the collapse equation. The range of instability is explored in Newtonian and post Newtonian （pN） limits. We conclude that the electromagnetic field diminishes the effects of the shearing viscosity in the instability range and makes the system more unstable in both Newtonian and post Newtonian approximations.