869069.fig.009
Figure 9: The graph shows the closest approach 𝑟 𝑜 for the effective geometry of the Born-Infeld black hole as a function of the nonlinear parameter 𝛽 . Here, 𝐷 is kept fixed at 4 . 5 6 . Also, 𝑀 = 1 . 0 6 4 0 5 , 𝑄 = 1 .