Generalized Oppenheimer-Snyder gravitational collapse into regular black holes

被引：8
作者：
Shojai, F. [1 ,2 ]
Sadeghi, A. [1 ]
Hassannejad, R. [1 ]
机构：
[1] Univ Tehran, Dept Phys, POB 14395-547, Tehran, Iran
[2] Inst Res Fundamental Sci IPM, Sch Phys, POB 19395-5531, Tehran, Iran
来源：
CLASSICAL AND QUANTUM GRAVITY | 2022年 / 39卷 / 08期
关键词：
regular black hole; gravitational collapse; polytropic equation of state; NONLINEAR-ELECTRODYNAMICS; COSMOLOGICAL TERM; SPACE-TIME; SCHWARZSCHILD; RELATIVITY; EINSTEIN; STABILITY; EQUATIONS;
D O I：
10.1088/1361-6382/ac5924
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We shall study the formation of a particular class of regular black holes (BHs) from the gravitational collapse of a massive star. The inside geometry is described by spatially flat Friedmann-Robertson-Walker (FRW) metric and the stellar matter is distributed uniformly without any pre-assumption about its equation of state. Our model is a generalization of Oppenheimer-Snyder collapse for regular BHs. We have obtained the density and pressure of star by applying the condition of smooth joining of metrics at the freely falling surface of star. Specifying the regular BHs to Hayward and Bardeen cases, we see that the stellar matter is described by a polytropic equation of state and moreover, for the radius smaller than a certain value, the strong energy condition becomes invalid. Then for both BHs, the interior apparent and event horizons and also the stellar surface are obtained as functions of the proper time of star. At the end, we have constructed a new two parametric family of regular BHs jointed smoothly to the flat FRW interior metric of a polytropic star with an arbitrary index.
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页数：21
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共 87 条
  • [1] Observation of Gravitational Waves from a Binary Black Hole Merger
    Abbott, B. P.
    Abbott, R.
    Abbott, T. D.
    Abernathy, M. R.
    Acernese, F.
    Ackley, K.
    Adams, C.
    Adams, T.
    Addesso, P.
    Adhikari, R. X.
    Adya, V. B.
    Affeldt, C.
    Agathos, M.
    Agatsuma, K.
    Aggarwal, N.
    Aguiar, O. D.
    Aiello, L.
    Ain, A.
    Ajith, P.
    Allen, B.
    Allocca, A.
    Altin, P. A.
    Anderson, S. B.
    Anderson, W. G.
    Arai, K.
    Arain, M. A.
    Araya, M. C.
    Arceneaux, C. C.
    Areeda, J. S.
    Arnaud, N.
    Arun, K. G.
    Ascenzi, S.
    Ashton, G.
    Ast, M.
    Aston, S. M.
    Astone, P.
    Aufmuth, P.
    Aulbert, C.
    Babak, S.
    Bacon, P.
    Bader, M. K. M.
    Baker, P. T.
    Baldaccini, F.
    Ballardin, G.
    Ballmer, S. W.
    Barayoga, J. C.
    Barclay, S. E.
    Barish, B. C.
    Barker, D.
    Barone, F.
    [J]. PHYSICAL REVIEW LETTERS, 2016, 116 (06)
  • [2] [Anonymous], 2007, Introduction to Quantum Effects in Gravity, DOI DOI 10.1017/CBO9780511809149
  • [3] [Anonymous], 2019, ASTROPHYS J LETT, DOI DOI 10.3847/2041-8213/AB0EC7
  • [4] [Anonymous], 1979, P 2 MARC GROSSM M GE
  • [5] Non-commutative geometry inspired charged black holes
    Ansoldi, Stefano
    Nicolini, Piero
    Smailagic, Anais
    Spallucci, Euro
    [J]. PHYSICS LETTERS B, 2007, 645 (2-3) : 261 - 266
  • [6] Ansoldi Stefano., 2008, C BLACK HOL NAK SING
  • [7] Non-singular charged black hole solution for non-linear source
    Ayón-Beato, E
    García, A
    [J]. GENERAL RELATIVITY AND GRAVITATION, 1999, 31 (05) : 629 - 633
  • [8] New regular black hole solution from nonlinear electrodynamics
    Ayón-Beato, E
    García, A
    [J]. PHYSICS LETTERS B, 1999, 464 (1-2) : 25 - 29
  • [9] Regular black hole in general relativity coupled to nonlinear electrodynamics
    Ayon-Beato, E
    Garcia, A
    [J]. PHYSICAL REVIEW LETTERS, 1998, 80 (23) : 5056 - 5059
  • [10] Four-parametric regular black hole solution
    Ayón-Beato, E
    García, A
    [J]. GENERAL RELATIVITY AND GRAVITATION, 2005, 37 (04) : 635 - 641
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