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.4 The radius of the unstable circular orbit $r_{\rm uns}$ (a) and the radius of the stable circular orbit $r_{\rm sta}$ (b) of particle with different $Q$ for fixed $C = 0.0002$, $M = 1$, $b=4.2$.