Cracking of general relativistic anisotropic polytropes

被引：59
|
作者：
Herrera, L. [1 ,2 ]
Fuenmayor, E. [1 ]
Leon, P. [1 ]
机构：
[1] Cent Univ Venezuela, Fac Ciencias, Escuela Fis, Caracas 1050, Venezuela
[2] Univ Salamanca, Inst Univ Fis Fundamental & Matemat, Salamanca 37007, Spain
来源：
PHYSICAL REVIEW D | 2016年 / 93卷 / 02期
关键词：
GRAVITATING COMPACT OBJECTS; FLUID SPHERES; MAGNETIC COLLAPSE; LOCAL ANISOTROPY; BULK VISCOSITY; QUARK MATTER; WHITE-DWARFS; STARS; PULSAR; STATE;
D O I：
10.1103/PhysRevD.93.024047
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We discuss the effect that small fluctuations of the local anisotropy of pressure and of the energy density may have on the occurrence of cracking in spherical compact objects, satisfying a polytropic equation of state. Two different kinds of polytropes are considered. For both, it is shown that departures from equilibrium may lead to the appearance of cracking, for a wide range of values of the parameters defining the polytrope. Prospective applications of the obtained results to some astrophysical scenarios are pointed out.
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页数：14
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