1. BOOMERanG constraints on primordial non-Gaussianity from analytical Minkowski functionals
- Author
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W. C. Jones, Peter A. R. Ade, Chiaki Hikage, B. P. Crill, Max Tegmark, Philip Daniel Mauskopf, Nicola Vittorio, Eiichiro Komatsu, T. E. Montroy, Enzo Pascale, G. De Troia, Ted Kisner, G. Di Stefano, G. Polenta, C. J. MacTavish, F. Piacentini, Julian Borrill, P. de Bernardis, S. Ricciardi, Carlo R. Contaldi, Andrew E. Lange, J. E. Ruhl, Eric Hivon, Calvin B. Netterfield, Silvia Masi, Alessandro Melchiorri, A. de Oliveira-Costa, James J. Bock, Giovanni Romeo, J. R. Bond, G. de Gasperis, M. Veneziani, Paolo Natoli, M. Migliaccio, and A. Boscaleri
- Subjects
Physics ,Field (physics) ,010308 nuclear & particles physics ,Cosmic microwave background ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Joint analysis ,01 natural sciences ,Space and Planetary Science ,Coupling parameter ,Non-Gaussianity ,0103 physical sciences ,Minkowski space ,Limit (mathematics) ,010303 astronomy & astrophysics ,Mathematical physics - Abstract
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
- Published
- 2010
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