Probing primordial non Gaussianity in the BOOMERanG CMB maps: an analysis based on analytical Minkowski functionals

M. Migliaccio, P. Natoli, G. De Troia, C. Hikage, E. Komatsu, P. A R Ade, J. J. Bock, J. R. Bond, J. Borrill, A. Boscaleri, C. R. Contaldi, B. P. Crill, P. de Bernardis, G. de Gasperis, A. de Oliveira-Costa, G. Di Stefano, E. Hivon, T. S. Kisner, W. C. Jones, A. E. LangeS. Masi, Philip Mauskopf, C. J. MacTavish, A. Melchiorri, T. E. Montroy, C. B. Netterfield, E. Pascale, F. Piacentini, G. Polenta, S. Ricciardi, G. Romeo, J. E. Ruhl, M. Tegmark, M. Veneziani, N. Vittorio

Research output: Contribution to journalArticle

2 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)278-286
Number of pages9
JournalNuclear Physics B - Proceedings Supplements
Volume194
Issue numberC
DOIs
StatePublished - Oct 2009
Externally publishedYes

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functionals
microwaves
machinery
flight
anisotropy
simulation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Probing primordial non Gaussianity in the BOOMERanG CMB maps : an analysis based on analytical Minkowski functionals. / Migliaccio, M.; Natoli, P.; De Troia, G.; Hikage, C.; Komatsu, E.; 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.; de Oliveira-Costa, A.; Di Stefano, G.; Hivon, E.; Kisner, T. S.; Jones, W. C.; Lange, A. E.; Masi, S.; Mauskopf, Philip; MacTavish, C. J.; Melchiorri, A.; Montroy, T. E.; Netterfield, C. B.; Pascale, E.; Piacentini, F.; Polenta, G.; Ricciardi, S.; Romeo, G.; Ruhl, J. E.; Tegmark, M.; Veneziani, M.; Vittorio, N.

In: Nuclear Physics B - Proceedings Supplements, Vol. 194, No. C, 10.2009, p. 278-286.

Research output: Contribution to journalArticle

Migliaccio, M, Natoli, P, De Troia, G, Hikage, C, Komatsu, E, Ade, PAR, Bock, JJ, Bond, JR, Borrill, J, Boscaleri, A, Contaldi, CR, Crill, BP, de Bernardis, P, de Gasperis, G, de Oliveira-Costa, A, Di Stefano, G, Hivon, E, Kisner, TS, Jones, WC, Lange, AE, Masi, S, Mauskopf, P, MacTavish, CJ, Melchiorri, A, Montroy, TE, Netterfield, CB, Pascale, E, Piacentini, F, Polenta, G, Ricciardi, S, Romeo, G, Ruhl, JE, Tegmark, M, Veneziani, M & Vittorio, N 2009, 'Probing primordial non Gaussianity in the BOOMERanG CMB maps: an analysis based on analytical Minkowski functionals', Nuclear Physics B - Proceedings Supplements, vol. 194, no. C, pp. 278-286. https://doi.org/10.1016/j.nuclphysbps.2009.07.092
Migliaccio, M. ; Natoli, P. ; De Troia, G. ; Hikage, C. ; Komatsu, E. ; 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. ; de Oliveira-Costa, A. ; Di Stefano, G. ; Hivon, E. ; Kisner, T. S. ; Jones, W. C. ; Lange, A. E. ; Masi, S. ; Mauskopf, Philip ; MacTavish, C. J. ; Melchiorri, A. ; Montroy, T. E. ; Netterfield, C. B. ; Pascale, E. ; Piacentini, F. ; Polenta, G. ; Ricciardi, S. ; Romeo, G. ; Ruhl, J. E. ; Tegmark, M. ; Veneziani, M. ; Vittorio, N. / Probing primordial non Gaussianity in the BOOMERanG CMB maps : an analysis based on analytical Minkowski functionals. In: Nuclear Physics B - Proceedings Supplements. 2009 ; Vol. 194, No. C. pp. 278-286.
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T1 - Probing primordial non Gaussianity in the BOOMERanG CMB maps

T2 - an analysis based on analytical Minkowski functionals

AU - Migliaccio, M.

AU - Natoli, P.

AU - De Troia, G.

AU - Hikage, C.

AU - Komatsu, E.

AU - Ade, P. A R

AU - Bock, J. J.

AU - Bond, J. R.

AU - Borrill, J.

AU - Boscaleri, A.

AU - Contaldi, C. R.

AU - Crill, B. P.

AU - de Bernardis, P.

AU - de Gasperis, G.

AU - de Oliveira-Costa, A.

AU - Di Stefano, G.

AU - Hivon, E.

AU - Kisner, T. S.

AU - Jones, W. C.

AU - Lange, A. E.

AU - Masi, S.

AU - Mauskopf, Philip

AU - MacTavish, C. J.

AU - Melchiorri, A.

AU - Montroy, T. E.

AU - Netterfield, C. B.

AU - Pascale, E.

AU - Piacentini, F.

AU - Polenta, G.

AU - Ricciardi, S.

AU - Romeo, G.

AU - Ruhl, J. E.

AU - Tegmark, M.

AU - Veneziani, M.

AU - Vittorio, N.

PY - 2009/10

Y1 - 2009/10

N2 - 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.

AB - 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.

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