Synthetic radio 6 GHz and emission measure maps. Top: synthetic radio 6 GHz emission maps of the simulated nebula around ζ Ophiuchi on a linear scale with units MJy ster⁻¹. Bottom: synthetic emission measure maps of the simulated nebula around ζ Ophiuchi on a linear scale in units of cm⁻⁶ pc. Both are the Z01 simulation. Coordinates are in parsecs relative to the position of the star (white cross).