Low-density model: a) magnetic field strength; b) perturbation of the B-LOS angle; c) thermal and nonthermal number density; and d) temperature perturbations along a cross section through the center of the cylinder. Snapshots are taken at t = 3 / 4P with a viewing angle 90°. The black (white) cross indicates the antinode (node) of the field magnitude, density, and temperature oscillation. The lines of sight passing upward through the antinode (node) at different viewing angles, 30°, 45°, 60°, and 90°, are shown by dashed lines in plot a b). (A color version of this figure is available in the online journal.)