期刊
GENERAL RELATIVITY AND GRAVITATION
卷 35, 期 8, 页码 1435-1457出版社
KLUWER ACADEMIC/PLENUM PUBL
DOI: 10.1023/A:1024534702166
关键词
radial perturbations; stars; anisotropic pressure
We investigate the stability of self-gravitating spherically symmetric anisotropic spheres under radial perturbations. We consider both the Newtonian and the full general-relativistic perturbation treatment. In the general-relativistic case, we extend the variational formalism for spheres with isotropic pressure developed by Chandrasekhar. We find that, in general, when the tangential pressure is greater than the radial pressure, the stability of the anisotropic sphere is enhanced when compared to isotropic configurations. In particular, anisotropic spheres are found to be stable for smaller values of the adiabatic index gamma.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据