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By assuming the field seeding the curvature perturbations $ \zeta $ is a dynamically arising condensate, we are able to derive the relation $ f_{NL} ^2 \simeq 10^8 H / M_c $ between the non-Gaussianit...
Local non-Gaussianity in the Cosmic Microwave Background the Bayesian way
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/27
We introduce an exact Bayesian approach to search for non-Gaussianity of local type in Cosmic Microwave Background (CMB) radiation data. Using simulated CMB temperature maps, the newly developed techn...
Non-Gaussianity and the Cosmic Microwave Background Anisotropies
Non-Gaussianity Cosmic Microwave
2010/3/19
We review in a pedagogical way the present status of the impact of non-Gaussianity (NG) on the Cosmic Microwave Background (CMB) anisotropies. We first show how to set the initial conditions at second...