Periodic Orbits Around Kerr Sen Black Holes*

Chang-Qing Liu,Chi-Kun Ding,Ji-Liang Jing

Fig. 3 (Color online) Zoom-whirl periodic orbits with $q=w+{v}/{z}=1+{1}/{z}$, ($z =$ 1, 2, 3, 4) for $a=0$, $b=0.2$, $L=3.8$, here we set $M=1$.