Figure 3From: Riemann solvers and Alfven waves in black hole magnetospheres HLL Riemann solver vs. HLLI Riemann solver contact discontinuity. Figure 3 shows two simulations of an isolated, stationary Alfven wave. The transverse velocity and magnetic field are shown. The result from the HLL Riemann solver is shown with crosses while the result from the HLLI Riemann solver is shown with dots.Back to article page