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CMB lensing and primordial non-Gaussianity
Duncan Hanson, Kendrick M. Smith, Anthony Challinor +1
We study the effects of gravitational lensing on the estimation of non-Gaussianity from the bispectrum of the cosmic microwave background (CMB) temperature anisotropies. We find th…
Non-Gaussianities in Single Field Inflation and their Optimal Limits from the WMAP 5-year Data
Leonardo Senatore, Kendrick M. Smith, Matias Zaldarriaga
Using the recently developed effective field theory of inflation, we argue that the size and the shape of the non-Gaussianities generated by single-field inflation are generically…
Non-Gaussianity as a Probe of the Physics of the Primordial Universe and the Astrophysics of the Low Redshift Universe
E. Komatsu, N. Afshordi, N. Bartolo +58
A new and powerful probe of the origin and evolution of structures in the Universe has emerged and been actively developed over the last decade. In the coming decade, non-Gaussiani…
B-mode CMB Polarization from Patchy Screening during Reionization
Cora Dvorkin, Wayne Hu, Kendrick M. Smith
B-modes in CMB polarization from patchy reionization arise from two effects: generation of polarization from scattering of quadrupole moments by reionization bubbles, and fluctuati…
Optimal limits on f_{NL}^{local} from WMAP 5-year data
Kendrick M. Smith, Leonardo Senatore, Matias Zaldarriaga
We have applied the optimal estimator for f_{NL}^{local} to the 5 year WMAP data. Marginalizing over the amplitude of foreground templates we get -4 < f_{NL}^{local} < 80 at 95% CL…