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

Figure 16

Effect of the primordial component for different non-Gaussian models on the matter reduced bispectrum, as a function of the triangle shape. The continuous line shows the reduced bispectrum at tree level in PT for Gaussian initial conditions at redshift assuming , as a function of the angle between and . Dashed lines show the reduced bispectrum including the primordial component for the local (a), equilateral (b), orthogonal (c), and folded (d) models. For the local, equilateral, and orthogonal models we assume the values of corresponding to the 95% C.L. limits as determined by Smith et al. [68] and Senatore et al. [18] from WMAP observations. The shaded area indicates the currently allowed region. For the folded model, for which no observational constraints are available, the values are considered.

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(b)

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