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

Figure 7

The reduced CMB bispectrum for the constant model normalized relative to the large-angle constant solution (49). On (a), the bispectrum is plotted over the allowed tetrahedral region (see Figure 2) using several density contours (light blue positive and magenta negative) out to and, on (b), transverse triangular slices are shown at . Note the coherent pattern of acoustic peaks induced by the transfer functions, from the study by Fergusson et al. in [14].

(a)

(b)