Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure

Figure 12

(a), (b) A Gaussian realization of the CMB sky (a) and a non-Gaussian local CMB map (b), obtained by adding to the Gaussian one a NG component with from the study by Liguori et al. in [117]. (b) and (d) A Gaussian CMB map (c) and a non-Gaussian DBI map (d) with , from [9]. The maps in the upper panel have been obtained using the local algorithm described in Section 3.10.1. The maps in (b) have been produced with the bispectrum algorithm of Section 3.10.2, after having separated the primordial DBI shape using the eigenmode expansion defined in (26).

(a)

(b)