Back Article

R. Abbottet al., Astrophys. J. Lett.L5, 915 (2021)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L1, 875 (2019)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L2, 875 (2019)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L3, 875 (2019)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L4, 875 (2019)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L5, 875 (2019)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L6, 875 (2019)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L12, 910 (2021)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L13, 910 (2021)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L12, 930 (2022)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L13, 930 (2022)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L14, 930 (2022)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L15, 930 (2022)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L16, 930 (2022)

K. Akiyamaet al. (Event Horizon Telescope Collaboration), Astrophys. J. Lett.L17, 930 (2022)

J. L. Synge, Not. R. Astron. Soc.131, 463 (1966)

J. M. Bardeen,Timelike and null geodesics in the Kerr metric, In Black holes(1973) p.215

H. Falcke, F. Melia, and E. Agol, Astrophys. J.528(2000)

N. I. Shakura and R. A. Sunyaev, Astron. Astrophys.24, 337-355 (1973)

J. P. Luminet, Astron. Astrophys.75, 228 (1979)

G. Gyulchev, P. Nedkova, T. Vetsovet al., Phys. Rev. D100, 024055 (2019)

G. Gyulchev, P. Nedkova, T. Vetsovet al., Eur. Phys. J. C81, 885 (2021)

S. Paul, R. Shaikh, P. Banerjeeet al., JCAP03, 055 (2020)

F. Rahaman, T. Manna, R. Shaikhet al., Nucl. Phys. B972, 115548 (2021)

C. Q. Liu, L. Tang, and J. L. Jing, Int. J. Mod. Phys. D31, 2250041 (2022)

S. E. Gralla, D. E. Holz, and R. M. Wald, Phys. Rev. D100, 024018 (2019)

P. V. P. Cunha and C. A. R. Herdeiro, Gen. Relativ. Grav.50, 42 (2018)

X. X. Zeng and H. Q. Zhang, Eur. Phys. J. C80, 1058 (2020)

J. Peng, M. Y. Guo, and X. H. Feng, Chin. Phys. C.45, 085103 (2021)

G. P. Li and K. J. He, Eur. Phys. J. C81, 1018 (2021)

S. Guo, G. R. Li, and E. W. Liang, Class. Quant. Grav.39, 135004 (2022)

G. Z. Guo, P. Wang, H. W. Wuet al., JHEP06, 060 (2022)

K. J. He, S. C. Tan, and G. P. Li, Eur. Phys. J. C82, 81 (2022)

X. X. Zeng, K. J. He, G. P. Liet al., Eur. Phys. J. C82, 764 (2022)

S. Guo, G. R. Li, and E. W. Liang, Phys. Rev. D105, 023024 (2022)

E. Groen,Cosmic strings, Master Thesis(University of Amsterdam, 2009)

P. S. Letelier, Phys. Rev. D.20, 1294-1302 (1979)

J. M. Toledo and V. B. Bezerra, Eur. Phys. J. C.79, 110 (2019)

H. Ranjbari, M. Sadeghi, M. Ghanaatianet al., Eur. Phys. J. C.80, 17 (2020)

H. Chen, B. C. Lütfüoǧlu, H. Hassanabadiet al., Phys. Lett. B.827, 136994 (2022)

A. Sood, A. Kumar, J. K. Singhet al., Eur. Phys. J. C.82, 227 (2022)

J. M. Toledo and V. B. Bezerra, Eur. Phys. J. C.79, 117 (2019)

D. V. Singh, S. G. Ghosh, and S. D. Maharaj, Phys. Dark. Univ.30, 100730 (2020)

M. E. Rodrigues and H. A. Vieira, Phys. Rev. D.106, 084015 (2022)

Z. H. Li and T. Zhou, Phys. Rev. D.104, 104044 (2021)

A. Y. He, J. Tao, Y. D. Xueet al., Chin. Phys. C.46, 065102 (2022)

G. Mustafa et al, Chin. Phys. C46, 125107 (2022)

M. Fathi, M. Olivares, and J. R. Villanueva, Eur. Phys. J. C82, 629 (2022)

Q. Li, C. Ma, Y. Zhanget al., Eur. Phys. J. C82, 658 (2022)

C. R. Keeton and A. O. Petters, Phys. Rev. D.72, 104006 (2005)

C. R. Keeton and A. O. Petters, Phys. Rev. D.73, 044024 (2006)

C. R. Keeton and A. O. Petters, Phys. Rev. D.73, 104032 (2006)

W. G. Cao and Y. Xie, Eur. Phys. J. C.78, 191 (2018)

X. T. Cheng and Y. Xie, Phys. Rev. D.103, 064040 (2021)

R. Abuteret al., Astron. Astrophys.L5, 636 (2020)

X. M. Deng, Eur. Phys. J. C.80, 489 (2020)

X. M. Gao, Annals. Phys.418, 168194 (2020)

X. M. Deng, Phys. Dark. Univ.30, 100629 (2020)

B. Gao and X. M. Deng, Eur. Phys. J. C.81, 983 (2021)

H. Lin and X. M. Deng, Phys. Dark. Univ.31, 100745 (2020)

B. Gao and X. M. Deng, Mod. Phys. Lett. A33, 36 (2021)

H. Y. Lin and X. M. Deng, Eur. Phys. J. Plus.137, 176 (2022)

J. Zhang and Y. Xie, Astrophys. Space. Sci.367, 17 (2022)

H. Y. Lin and X. M. Deng, Universe.8, 278 (2022)

J. Zhang and Y. Xie, Eur. Phys. J. C.82, 854 (2022)

V. Bozza, Phys. Rev. D.66, 103001 (2002)

V. Bozza, Gen. Rel. Grav.42, 2269 (2010)

E. F. Eiroa, G. E. Romero, and D. F. Torres, Phys. Rev. D.66, 24010-24010 (2002)

N. Tsukamoto, Phys. Rev. D.95, 064035 (2017)

X. Lu, F. W. Yang, and Y. Xie, Eur. Phys. J. C.76, 357 (2016)

S. S. Zhao and Y. Xie, Eur. Phys. J. C.77, 272 (2017)

Z. Horvath, L. A. Gergely, Z. Kereszteset al., Phys. Rev. D.84, 83006 (2011)

E. F. Eiroa and C.M.Sendra, Phys. Rev. D.86, 083009 (2012)

S. S. Zhao and Y. Xie, Phys. Lett. B.774, 357-361 (2017)

X. Y. Zhu and Y. Xie, Eur. Phys. J. C.80, 444 (2020)

S. S. Zhao and Y. Xie, Eur. Phys. J. C.82, 162 (2022)

S. S. Zhao and Y. Xie, JCAP07, 007-007 (2016)

C. Y. Wang, Y. F. Shen, and Y. Xie, JCAP04, 022-022 (2019)

X. Lu and Y. Xie, Eur. Phys. J. C.79, 1016 (2019)

X. Lu and Y. Xie, Eur. Phys. J. C.80, 625 (2020)

X. Y. Gao and Y. Xie, Phys. Rev. D.103, 043008 (2021)

X. Lu and Y. Xie, Eur. Phys. J. C.81, 627 (2021)

J. Zhang and Y. Xie, Eur. Phys. J. C.82, 471 (2022)

W. Liu, Phys. Lett. B.795, 475-481 (2019)

D. N. Page and K. S. Thorne, Astrophys. J.191, 499-506 (1974)

M. A. Abramowicz and P. C. Fragile, Living. Rev. Rel.16, 1 (2013)