Shadow and massless particles around regular Bardeen black holes in 4D Einstein Gauss-Bonnet gravity

被引：19

作者：

Rayimbaev, Javlon ^{[1
,2
,3
,4
,5
]}

Bardiev, Dilshodbek ^{[6
]}

Mirzaev, Temurbek ^{[1
,4
]}

Abdujabbarov, Ahmadjon ^{[1
,4
,5
,7
,8
]}

Khalmirzaev, Akram ^{[9
]}

机构：

[1] Ulugh Beg Astron Inst, Astron St 33, Tashkent 100052, Uzbekistan

[2] Akfa Univ, Kich Halqa Yuli St 17, Tashkent 100095, Uzbekistan

[3] Tashkent State Tech Univ, Tashkent 100095, Uzbekistan

[4] Natl Univ Uzbekistan, Tashkent 100174, Uzbekistan

[5] Inst Nucl Phys, Ulugbek 1, Tashkent 100214, Uzbekistan

[6] Silesian Univ Opava, Res Ctr Theoret Phys & Astrophys, Inst Phys, Bezrucovo 13, CZ-74601 Opava, Czech Republic

[7] Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China

[8] Tashkent Inst Irrigat & Agr Mechanizat Engineers, Kori Niyoziy 39, Tashkent 100000, Uzbekistan

[9] Namangan State Univ, Namangan, Uzbekistan

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2022年 / 31卷 / 07期

关键词：

Black holes; magnetic fields; magnetized particles; relativistic stars; orbits; OPTICAL REFERENCE GEOMETRY; FIELD LIMIT; SPACETIMES; MOTION;

D O I：

10.1142/S0218271822500559

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we study dynamics of massless (photon and neutrino-like) particles in the spacetime of regular Bardeen black hole (BH) in novel four-dimensional Einstein-Gauss-Bonnet (4D EGB) theory. First, we have analyzed the hor properties of the spacetime of the Bardeen BH with respect to the Gauss-Bonnet (GB) coupling parameter alpha. Our detailed analysis has shown that the GB coupling parameter is limited by maximum and minimum values at, alpha is an element of (-0.15 divided by 1) and the extreme value of magnetic charge of the BH depends on the parameter alpha. We have explored motion of neutrino-like particles and photons around the Bardeen BH. We have also explored the possibility of mimicking cases of the spin of Kerr BH and charge of Reissner-Nordstrom BH by the Bardeen charge, providing the same values of impact parameter for photons corresponding to the BH shadow size. Finally, we have investigated spherically infalling accretion and shadow of the Bardeen BHs in 4D EGB theory.

引用

页数：17

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