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Authors: Natoli, P.*
De Troia, G.*
Hikage, C.*
Komatsu, E.*
Migliaccio, M.*
Ade, P. A. R.*
Bock, J. J.*
Bond, J.R.*
Borrill, J.*
Boscaleri, A.*
Contaldi, C. R.*
Crill, B. P.*
de Bernardis, P.*
de Gasperis, G.*
A. de Oliveira-Costa, A.*
Di Stefano, G.*
Hivon, E.*
Kisner, T. S.*
Jones, W. C.*
Lange, A. E.*
Masi, S.*
Mauskop, P. D.*
MacTavish, C. J.*
Melchiorri, A.*
Montroy, T. E.*
Netterfield, C. B.*
Pascale, E.*
Piacentini, F.*
Polentao, G.*
Ricciardi, S.*
Romeo, G.*
Ruhl, J. E.*
Tegmark, M.*
Veneziani, M.*
Vittorio, N.*
Title: BOOMERanG Constraints on Primordial Non-Gaussianity from Analytical Minkowski Functionals
Issue Date: 2009
Keywords: Cosmology: early Universe
cosmic microwave backgroundation
methods:statistical – analytical
Abstract: We use Minkowski Functionals (MF) to constrain a primordial non-Gaussian contribu- tion 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 fNL without the need for non-Gaussian simulations. We find -1020 < fNL < 390 at 95% CL, significantly improving the previous constraints by De Troia et al. (2007) on the BOOMERanG 2003 dataset. These are the best fNL limits to date for suborbital probes.
Appears in Collections:05.07.99. General or miscellaneous

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