1. Searching for non-Gaussian signals in the BOOMERanG 2003 CMB map: Preliminary results
- Author
-
Calvin B. Netterfield, T. E. Montroy, A. Boscaleri, Carlo R. Contaldi, M. Veneziani, Peter A. R. Ade, Paolo Natoli, P. Cabella, W. C. Jones, Giovanni Romeo, Julian Borrill, G. Di Stefano, Martin Kunz, Andrew H. Jaffe, F. Piacentini, Simon Prunet, Alessandro Melchiorri, Dmitry Pogosyan, A. de Oliveira-Costa, Enzo Pascale, Andrew E. Lange, Ted Kisner, Max Tegmark, Eric Hivon, James J. Bock, Philip Daniel Mauskopf, J. R. Bond, G. de Gasperis, B. P. Crill, G. Polenta, P. Santini, Nicola Vittorio, S. Ricciardi, Sabino Matarrese, Silvia Masi, Pedro G. Ferreira, Michele Liguori, C. J. MacTavish, P. de Bernardis, G. De Troia, and J. E. Ruhl
- Subjects
Physics ,Pixel ,Gaussian ,Cosmic microwave background ,Estimator ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Space (mathematics) ,Computational physics ,symbols.namesake ,Amplitude ,Space and Planetary Science ,Minkowski space ,symbols ,Sensitivity (control systems) - Abstract
We analyze the BOOMERanG 2003 (B03) 145 GHz temperature map to constrain the amplitude of a non Gaussian, primordial contribution to CMB fluctuations. We perform a pixel space analysis restricted to a portion of the map chosen in view of high sensitivity, very low foreground contamination and tight control of systematic effects. We set up an estimator based on the three Minkowski functionals which relies on high quality simulated data, including non Gaussian CMB maps. We find good agreement with the Gaussian hypothesis and derive the first limits based on BOOMERanG data for the non linear coupling parameter f_NL as -300
- Published
- 2007