Left: shapes of tori with constant angular momentum. PDs with R_in → R_mb have an arbitrarily high H/R, see also Fig. 4. Shapes correspond to R_in/r_S = 2.025,2.01,2.005, and 2.0025. Black dots indicate the highest H/R. Right: Torus with R_in/r_S = 2.0025, corresponding to χ = cotα = 7.04. The dot indicates the highest H/R, crosses indicate the outer boundary of the region, where 75% and 90% of the total radiation is generated. We note that the scaling is different for vertical and horizontal axes.