Figure 6
Images at single frequency, background and composite. From left to right, top to bottom: snapshot panels at \(t=3000~r_{\mathrm { g}}/c\) for: (i) background star field only image, (ii) 22 GHz image, (iii) 43 GHz image, (iv) 86 GHz image, (v) 230 GHz image, and (vi) combined (composite) image of (i)–(v)