Shadow and photon sphere of black hole in clouds of strings and quintessence

[1]
J. P. Luminet, Astron. Astrophys. 75, 228-235 (1979)
[2]
P. V. P. Cunha, N. A. Eiró, C. A. R. Herdeiro et al., JCAP 03, 035 (2020)
[3]
R. Narayan, M. D. Johnson, and C. F. Gammie, Astrophys. J. Lett. 885(2), L33 (2019)
[4]
K. Akiyama et al. (Event Horizon Telescope), Astrophys. J. Lett. 875, L1 (2019)
[5]
K. Akiyama et al. (Event Horizon Telescope), Astrophys. J. Lett. 875(1), L2 (2019)
[6]
K. Akiyama et al. (Event Horizon Telescope), Astrophys. J. Lett. 875(1), L3 (2019)
[7]
K. Akiyama et al. (Event Horizon Telescope), Astrophys. J. Lett. 875(1), L4 (2019)
[8]
K. Akiyama et al. (Event Horizon Telescope), Astrophys. J. Lett. 875(1), L5 (2019)
[9]
K. Akiyama et al. (Event Horizon Telescope), Astrophys. J. Lett. 875(1), L6 (2019)
[10]
Y. Mizuno, Z. Younsi, C. M. Fromm et al., Nature Astron. 2(7), 585-590 (2018)
[11]
J. L. Synge, Mon. Not. Roy. Astron. Soc. 131(3), 463-466 (1966)
[12]
J. M. Bardeen, W. H. Press, and S. A. Teukolsky, Astrophys. J. 178, 347 (1972)
[13]
S. E. Gralla, D. E. Holz, and R. M. Wald, Phys. Rev. D 100(2), 024018 (2019)
[14]
S. E. Gralla and A. Lupsasca, Phys. Rev. D 101(4), 044031 (2020)
[15]
J. Peng, M. Guo, and X. H. Feng, Chin. Phys. C 45(8), 085103 (2021)
[16]
J. Peng, M. Guo, and X. H. Feng, Phys. Rev. D 104(12), 124010 (2021)
[17]
P. V. P. Cunha, C. A. R. Herdeiro, E. Radu et al., Phys. Rev. Lett. 115(21), 211102 (2015)
[18]
J. Grover, J. Kunz, P. Nedkova et al., Phys. Rev. D 97(8), 084024 (2018)
[19]
A. Yumoto, D. Nitta, T. Chiba et al., Phys. Rev. D 86, 103001 (2012)
[20]
L. Amarilla, E. F. Eiroa, and G. Giribet, Phys. Rev. D 81, 124045 (2010)
[21]
R. Kumar, B. P. Singh, M. S. Ali et al., Phys. Dark Univ. 34, 100881 (2021)
[22]
J. R. Mureika and G. U. Varieschi, Can. J. Phys. 95(12), 1299-1306 (2017)
[23]
V. Perlick and O. Y. Tsupko, Phys. Rev. D 95(10), 104003 (2017)
[24]
P. V. P. Cunha and C. A. R. Herdeiro, Gen. Rel. Grav. 50(4), 42 (2018)
[25]
R. A. Konoplya, Phys. Lett. B 795, 1-6 (2019)
[26]
K. Hioki and K. i. Maeda, Phys. Rev. D 80, 024042 (2009)
[27]
N. Tsukamoto, Phys. Rev. D 97(6), 064021 (2018)
[28]
R. Takahashi, Publ. Astron. Soc. Jap. 57, 273 (2005)
[29]
Q. Gan, P. Wang, H. Wu et al., Phys. Rev. D 104(4), 044049 (2021)
[30]
S. W. Wei and Y. X. Liu, JCAP 11, 063 (2013)
[31]
A. Abdujabbarov, F. Atamurotov, Y. Kucukakca et al., Astrophys. Space Sci. 344, 429-435 (2013)
[32]
J. Podolsky and R. Svarc, Phys. Rev. D 85, 044057 (2012)
[33]
J. Schee and Z. Stuchlik, Int. J. Mod. Phys. D 18, 983-1024 (2009)
[34]
C. Bambi, F. Caravelli, and L. Modesto, Phys. Lett. B 711, 10-14 (2012)
[35]
C. Bambi and N. Yoshida, Class. Quant. Grav. 27, 205006 (2010)
[36]
Z. Younsi, A. Zhidenko, L. Rezzolla et al., Phys. Rev. D 94(8), 084025 (2016)
[37]
P. V. P. Cunha, C. A. R. Herdeiro, B. Kleihaus et al., Phys. Lett. B 768, 373-379 (2017)
[38]
A. Belhaj, H. Belmahi, and M. Benali, Phys. Lett. B 821, 136619 (2021)
[39]
A. Abdujabbarov, M. Amir, B. Ahmedov et al., Phys. Rev. D 93(10), 104004 (2016)
[40]
M. Amir and S. G. Ghosh, Phys. Rev. D 94(2), 024054 (2016)
[41]
A. Saha, S. M. Modumudi, and S. Gangopadhyay, Gen. Rel. Grav. 50(8), 103 (2018)
[42]
E. F. Eiroa and C. M. Sendra, Eur. Phys. J. C 78(2), 91 (2018)
[43]
G. Lara, S. H. Völkel, and E. Barausse, Phys. Rev. D 104(12), 124041 (2021)
[44]
A. C. Pope et al. (SDSS), Astrophys. J. 607, 655-660 (2004)
[45]
E. Komatsu et al. (WMAP), Astrophys. J. Suppl. 192, 18 (2011)
[46]
V. V. Kiselev, Class. Quant. Grav. 20, 1187-1198 (2003)
[47]
E. J. Copeland, M. Sami, and S. Tsujikawa, Int. J. Mod. Phys. D 15, 1753-1936 (2006)
[48]
S. Perlmutter et al. (Supernova Cosmology Project), Astrophys. J. 517, 565-586 (1999)
[49]
A. G. Riess et al. (Supernova Search Team), Astron. J. 116, 1009-1038 (1998)
[50]
P. M. Garnavich et al. (Supernova Search Team), Astrophys. J. 509, 74-79 (1998)
[51]
S. Vagnozzi, C. Bambi, and L. Visinelli, Class. Quant. Grav. 37(8), 087001 (2020)
[52]
B. Stern, Y. Tikhomirova, M. Stepanov et al., Astrophys. J. Lett. 540, L21 (2000)
[53]
N. A. Bahcall, J. P. Ostriker, S. Perlmutter et al., Science 284, 1481-1488 (1999)
[54]
P. J. Steinhardt, L. M. Wang, and I. Zlatev, Phys. Rev. D 59, 123504 (1999)
[55]
L. M. Wang, R. R. Caldwell, J. P. Ostriker et al., Astrophys. J. 530, 17-35 (2000)
[56]
E. Frion, L. Giani, and T. Miranda, Open J.Astrophys. 4, 1 (2021)
[57]
C. H. Nam, Gen. Rel. Grav. 52(1), 1 (2020)
[58]
X. X. Zeng and H. Q. Zhang, Eur. Phys. J. C 80(11), 1058 (2020)
[59]
S. U. Khan and J. Ren, Phys. Dark Univ. 30, 100644 (2020)
[60]
P. S. Letelier, Phys. Rev. D 20, 1294-1302 (1979)
[61]
P. S. Letelier, Phys. Rev. D 28, 2414-2419 (1983)
[62]
D. Barbosa and V. B. Bezerra, Gen. Rel. Grav. 48(11), 149 (2016)
[63]
J. M. Toledo and V. B. Bezerra, Gen. Rel. Grav. 52(4), 34 (2020)
[64]
E. Herscovich and M. G. Richarte, Phys. Lett. B 689, 192-200 (2010)
[65]
J. M. Toledo and V. B. Bezerra, Eur. Phys. J. C 79(2), 117 (2019)
[66]
X. C. Cai and Y. G. Miao, Phys. Rev. D 101(10), 104023 (2020)
[67]
M. Chabab and S. Iraoui, Gen. Rel. Grav. 52(8), 75 (2020)
[68]
J. M. Toledo and V. B. Bezerra, Eur. Phys. J. C 79(2), 110 (2019)
[69]
J. de M.Toledo and V. B. Bezerra, Eur. Phys. J. C 78(7), 534 (2018)
[70]
J. L. Friedman, K. Schleich, and D. M. Witt, Phys. Rev. Lett. 71(10), 1486-1489 (1993)
[71]
G. J. Galloway, Classical Quantum Gravity 12(10), L99-L101 (1995)
[72]
X. X. Zeng, H. Q. Zhang, and H. Zhang, Eur. Phys. J. C 80(9), 872 (2020)
[73]
E. Teo, Gen. Rel. Grav. 53(1), 10 (2021)
[74]
M. Jaroszynski and A. Kurpiewski, Astron. Astrophys. 326, 419 (1997)
[75]
C. Bambi, Phys. Rev. D 87, 107501 (2013)
[76]
Z. Hu, Z. Zhong, P. C. Li et al., Phys. Rev. D 103(4), 044057 (2021)
[77]
H. Lu and H. D. Lyu, Phys. Rev. D 101(4), 044059 (2020)
[78]
M. Guo and P. C. Li, Eur. Phys. J. C 80(6), 588 (2020)