@article{2b590565a80046d887fcc7ad45d2f18c,
title = "Probing primordial non Gaussianity in the BOOMERanG CMB maps: an analysis based on analytical Minkowski functionals",
abstract = "Minkowski functionals are a powerful tool to constrain the Gaussianity of the Cosmic Microwave Background (CMB). In the limit of a weakly non Gaussian field, a perturbative approach can be derived [Hikage C., Komatsu E., & Matsubara T., 2006, ApJ, 653, 11] that is completely based on analytical formulae without requiring computationally intensive, dedicated Monte Carlo non Gaussian simulations of the CMB anisotropy. We apply this machinery to an intensity map derived from the 1998 and 2003 flights of BOOMERanG, analyzed here together for the first time. We set limits on the non-linear coupling parameter f NL as - 1020 < f NL < 390 at 95% CL, markedly improving the previous constraints set by [De Troia G. et al., 2007, ApJ, 670, L73] whose analysis was limited to the BOOMERanG 2003 dataset. These limits are the most stringent ever set among suborbital experiments.",
author = "M. Migliaccio and P. Natoli and {De Troia}, G. and C. Hikage and E. Komatsu and Ade, {P. A.R.} and Bock, {J. J.} and Bond, {J. R.} and J. Borrill and A. Boscaleri and Contaldi, {C. R.} and Crill, {B. P.} and {de Bernardis}, P. and {de Gasperis}, G. and {de Oliveira-Costa}, A. and {Di Stefano}, G. and E. Hivon and Kisner, {T. S.} and Jones, {W. C.} and Lange, {A. E.} and S. Masi and Mauskopf, {P. D.} and MacTavish, {C. J.} and A. Melchiorri and Montroy, {T. E.} and Netterfield, {C. B.} and E. Pascale and F. Piacentini and G. Polenta and S. Ricciardi and G. Romeo and Ruhl, {J. E.} and M. Tegmark and M. Veneziani and N. Vittorio",
note = "Funding Information: The BOOMERanG team gratefully acknowl edge support from the CIAR, CSA, and NSERC in Canada; Agenzia Spaziale Italiana, University La Sapienza and Programma Nazionale Ricerche in Antartide in Italy; PPARC and the Leverhulme Trust in the UK; and NASA (awards NAG5-9251 and NAG5-12723) and NSF (awards OPP-9980654 and OPP-0407592) in the USA. Additional support for detector development was provided by CIT and JPL. Field, logistical, and flight support were supplied by USAP and NSBF; This research used resources at NERSC, supported by the DOE under Contract No. DE-AC03-76SF00098, and at CASPUR (Rome, Italy: special thanks are due to M. Botti and F. Mas-saioli). We also acknowledge partial support from ASI Contract I/016/07/0 “COFIS” and ASI Contract Planck LFI activity of Phase E2. Some of the results in this paper have been derived using the HEALPix package [13]. C. H. acknowledges support from the Particle Physics and Astronomy Research Council grant number PP/C501692/1 and a JSPS (Japan Society for the Promotion of Science) fellowship.",
year = "2009",
month = oct,
doi = "10.1016/j.nuclphysbps.2009.07.092",
language = "English (US)",
volume = "194",
pages = "278--286",
journal = "Nuclear Physics B - Proceedings Supplements",
issn = "0920-5632",
publisher = "Elsevier",
number = "C",
}