Periodic Orbits Around Kerr Sen Black Holes*

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

Fig. 1 (Color online) Angular momentum $L_{\rm IBCO}$ and $L_{\rm ISCO}$ vs. $a$ in the Kerr Sen black hole, with Parameter $b=1, 0.8, 0.6, 0.4, 0.2, 0$ from left to right, here we set $M=1$.