Details

Autor(en) / Beteiligte

• De Troia, G
• Ade, P. A. R
• Bock, J. J
• Bond, J. R
• Borrill, J
• Boscaleri, A
• Cabella, P
• Contaldi, C. R
• Crill, B. P
• de Bernardis, P
• De Gasperis, G
• de Oliveira-Costa, A
• Di Stefano, G
• Ferreira, P. G
• Hivon, E
• Jaffe, A. H
• Kisner, T. S
• Kunz, M
• Jones, W. C
• Lange, A. E
• Liguori, M
• Masi, S
• Matarrese, S
• Mauskopf, P. D
• MacTavish, C. J
• Melchiorri, A
• Montroy, T. E
• Natoli, P
• Netterfield, C. B
• Pascale, E
• Piacentini, F
• Pogosyan, D
• Polenta, G
• Prunet, S
• Ricciardi, S
• Romeo, G
• Ruhl, J. E
• Santini, P
• Tegmark, M
• Veneziani, M
• Vittorio, N

Titel

Searching for Non-Gaussian Signals in the BOOMERANG 2003 CMB Maps

Ist Teil von

• The Astrophysical journal, 2007-12, Vol.670 (2), p.L73-L76

Ort / Verlag

Chicago, IL: IOP Publishing

Erscheinungsjahr

2007

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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 nonlinear coupling parameter integral of NL as -300 < integral of NL < 650 at 68% CL and -800 < integral of NL < 1050 at 95% CL.