Ghost Stars in General Relativity

被引：5
作者：
Herrera, Luis [1 ]
Di Prisco, Alicia [2 ]
Ospino, Justo [1 ,3 ]
机构：
[1] Univ Salamanca, Inst Univ Fis Fundamental & Matemat, Salamanca 37007, Spain
[2] Univ Cent Venezuela, Fac Ciencias, Escuela Fis, Caracas 1050, Venezuela
[3] Univ Salamanca, Dept Matemat Aplicada, Salamanca 37007, Spain
来源：
SYMMETRY-BASEL | 2024年 / 16卷 / 05期
关键词：
relativistic fluids; interior solutions; spherically symmetric sources; 04.40.-b; 04.40.Nr; 04.40.Dg; TELESCOPE RESULTS. I; ANISOTROPIC SPHERES; ENERGY DENSITY; EQUATIONS; SHADOW; MASS;
D O I：
10.3390/sym16050562
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We explore an idea put forward many years ago by Zeldovich and Novikov concerning the existence of compact objects endowed with arbitrarily small mass. The energy density of such objects, which we call "ghost stars", is negative in some regions of the fluid distribution, producing a vanishing total mass. Thus, the interior is matched on the boundary surface to Minkowski space-time. Some exact analytical solutions are exhibited and their properties are analyzed. Observational data that could confirm or dismiss the existence of this kind of stellar object are discussed.
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页数：12
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