Search for Non-Gaussianities in the WMAP Data with the Scaling Index Method

Figure 4

The ILC map in its original form (a) and after remapping of the temperatures and phases (b). First-order (c) and respective second-order surrogate (d) for 𝑙_cut=20. Note the resemblance of the remapped with the ILC map for all, but also of the first-order surrogate with the ILC map at large scales.

(a)

(b)

(c)

(d)