BOOMERanG Constraints on Primordial Non-Gaussianity from Analytical Minkowski Functionals

Details BOOMERanG Constraints on Primordial Non-Gaussianity from Analytical Minkowski Functionals BOOMERanG Constraints on Primordial Non-Gaussianity from Analytical Minkowski Functionals

2009-05-27

arxiv.org/abs/0905.4301v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

8 pages, 3 figures

Scientific paper

We use Minkowski Functionals (MF) to constrain a primordial non-Gaussian contribution to the CMB intensity field as observed in the 150 GHz and 145 GHz BOOMERanG maps from the 1998 and 2003 flights, respectively, performing for the first time a joint analysis of the two datasets. A perturbative expansion of the MF formulae in the limit of a weakly non-Gaussian field yields analytical formulae, derived by Hikage et al. (2006), which can be used to constrain the coupling parameter f_NL without the need for non-Gaussian simulations. We find -1020

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