On the linear stability of polytropic fluid spheres in R2 gravity

被引：3
|
作者：
Dzhunushaliev, V [1 ,2 ,3 ]
Folomeev, V [2 ,3 ,4 ]
机构：
[1] Al Parabi Kazakh Natl Univ, Dept Theoret & Nucl Phys, Alma Ata 050040, Kazakhstan
[2] Al Farabi Kazakh Natl Univ, Inst Expt & Theoret Phys, Alma Ata 050040, Kazakhstan
[3] NAS Kyrgyz Republ, Academician J Jeenbaev Inst Phys, 265 A,Chui St, Bishkek 720071, Kyrgyzstan
[4] Tomsk State Univ Control Syst & Radioelect TUSUR, Int Lab Theoret Cosmol, Tomsk 634050, Russia
来源：
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS | 2020年 / 17卷 / 11期
关键词：
Modified gravity; polytropic fluid; linear stability; JORDAN; STARS;
D O I：
10.1142/S0219887820501650
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Within R-2 gravity, we study the linear stability of strongly gravitating spherically symmetric configurations supported by a polytropic fluid. All calculations are carried out in the Jordan frame. It is demonstrated that, as in general relativity, the transition from stable to unstable systems occurs at the maximum of the curve mass-central density of the fluid.
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页数：14
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