Numerical Relativity as a Tool for Studying the Early Universe
Figure 1
Gravitational wave-induced MHD waves test results. The left column used 2nd order finite differencing, the middle column used 4th order finite differencing, and the right column used Fourier spectral differencing. Density is displayed here by calculating , velocity is displayed here by calculating , and -field is displayed here by calculating as in the Duez et al. paper [23]. Time is shown on the -axis. Because the physical size of the grid is 2 units, a time of 30 units represents 15 crossing times.
