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Ade, P. De Bernardis, P. D. Mauskopf, P. Natoli, S. Masi, S. Ricciardi, T. E. Montroy, T. S. Kisner, W. C. Jones","submitted_at":"2009-05-27T18:12:38Z","abstract_excerpt":"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. 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