On the gravitational collapse in 4-dimensional Einstein-Gauss-Bonnet gravity

被引：6
|
作者：
Hassannejad, R. [1 ]
Sadeghi, A. [1 ]
Shojai, F. [1 ]
机构：
[1] Univ Tehran, Dept Phys, POB 14395, Tehran, Iran
来源：
CLASSICAL AND QUANTUM GRAVITY | 2023年 / 40卷 / 07期
关键词：
gravitational collapse; Gauss-Bonnet gravity; black hole; QUASI-NORMAL MODES; BLACK-HOLE; GENERAL-RELATIVITY; SHADOWS; SYSTEMS; MATTER;
D O I：
10.1088/1361-6382/acbd81
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this paper, we treat 4-dimensional Einstein-Gauss-Bonnet (EGB) gravity as general relativity with an effective stress-energy tensor. We will study the modified Oppenheimer-Snyder-Datt model of the gravitational collapse of a star in a 4-dimensional EGB black hole (BH). The inside geometry of the star is described by the spatially flat Friedmann-Robertson-Walker metric and the matter is distributed uniformly without any pre-assumption about its equation of state. The exterior EGB BH is smoothly matched to the interior geometry without the requirement of any thin shell. This gives the energy density, pressure, and the equation of state of collapsing matter. At the end, we study the time evolution of event and apparent horizons.
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页数：12
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