Figure 4From: Riemann solvers and Alfven waves in black hole magnetospheres Torsional Alfven wave dissipation test. Figure 4 shows the results of the torsional Alfven wave dissipation test. A second order WENO reconstruction was used in all these tests. Figure 4a shows the decay in the z-component of the velocity as a function of time. Figure 4b shows the same for the z-component of the magnetic field.Back to article page