Geodesic Structure of a Non-linear Magnetic Charged Black Hole Surrounded by Quintessence

Li-Li Shi,Jian-Ping Hu,Yu Zhang,Chen Ma,Peng-Fei Duan

Fig. 17 (a) The behaviors of the effective potential of photon with different energy levels for fixed different parameters. Line 1 represents $C=0.0005$, $b = 4.2$, $M = 1$, $Q=0.3$; Line 2 represents $C=0.0002$, $b = 4.2$, $M = 1$, $Q=0.7$; Line 3 represents $C=0.0008$, $b = 3.8$, $M = 1$, $Q=0.5$; Line 4 represents $C=0.0015$, $b = 4.0$, $M = 1$, $Q=0.5$. (b) The behaviors of the effective potential of photon with different energy levels for fixed $C=0.0002$, $b = 4.2$, $M = 1$, $Q=0.7$.