Accretion onto Charged Black Holes in Einstein and Massive Theories of Gravity *
Abdul Jawad,Shahid Chaudhary
Fig.8 (Color online) Plot of critical speed of flow versus $r_{+}$ for non-linear BH in AdS spacetime. Other values are $M = 1$; $b = -1$; $q = 1.055$; $l = 1.$