Searching for non-gaussian signals in the BOOMERANG 2003 CMB maps

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

doi:10.1086/524402

Searching for non-gaussian signals in the BOOMERANG 2003 CMB maps

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

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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 functional 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 asat f_NL as -300 < f_NL < 650 at 68% CL and -800 <f_NL < 1050 at 95% CL.

Original language	English (US)
Pages (from-to)	L73-L76
Journal	Astrophysical Journal
Volume	670
Issue number	2 PART 2
DOIs	https://doi.org/10.1086/524402
State	Published - 2007
Externally published	Yes

Keywords

Cosmic microwave background

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/524402

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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., ... Vittorio, N. (2007). Searching for non-gaussian signals in the BOOMERANG 2003 CMB maps. Astrophysical Journal, 670(2 PART 2), L73-L76. https://doi.org/10.1086/524402

De Troia, G, Ade, PAR, Bock, JJ, Bond, JR, Borrill, J, Boscaleri, A, Cabella, P, Contaldi, CR, Crill, BP, De Bernardis, P, De Gasperis, G, De Oliveira-Costa, A, Di Stefano, G, Ferreira, PG, Hivon, E, Jaffe, AH, Kisner, TS, Kunz, M, Jones, WC, Lange, AE, Liguori, M, Masi, S, Matarrese, S, Mauskopf, PD, MacTavish, CJ, Melchiorri, A, Montroy, TE, Natoli, P, Netterfield, CB, Pascale, E, Piacentini, F, Pogosyan, D, Polenta, G, Prunet, S, Ricciardi, S, Romeo, G, Ruhl, JE, Santini, P, Tegmark, M, Veneziani, M & Vittorio, N 2007, 'Searching for non-gaussian signals in the BOOMERANG 2003 CMB maps', Astrophysical Journal, vol. 670, no. 2 PART 2, pp. L73-L76. https://doi.org/10.1086/524402

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title = "Searching for non-gaussian signals in the BOOMERANG 2003 CMB maps",

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 functional 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 asat fNL as -300 < fNL < 650 at 68% CL and -800 NL < 1050 at 95% CL.",

keywords = "Cosmic microwave background",

author = "{De Troia}, G. and Ade, {P. A.R.} and Bock, {J. J.} and Bond, {J. R.} and J. Borrill and A. Boscaleri and P. Cabella 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 Ferreira, {P. G.} and E. Hivon and Jaffe, {A. H.} and Kisner, {T. S.} and M. Kunz and Jones, {W. C.} and Lange, {A. E.} and M. Liguori and S. Masi and S. Matarrese and Mauskopf, {P. D.} and MacTavish, {C. J.} and A. Melchiorri and Montroy, {T. E.} and P. Natoli and Netterfield, {C. B.} and E. Pascale and F. Piacentini and D. Pogosyan and G. Polenta and S. Prunet and S. Ricciardi and G. Romeo and Ruhl, {J. E.} and P. Santini and M. Tegmark and M. Veneziani and N. Vittorio",

year = "2007",

doi = "10.1086/524402",

language = "English (US)",

volume = "670",

pages = "L73--L76",

journal = "Astrophysical Journal",

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TY - JOUR

T1 - Searching for non-gaussian signals in the BOOMERANG 2003 CMB maps

AU - De Troia, G.

AU - Ade, P. A.R.

AU - Bock, J. J.

AU - Bond, J. R.

AU - Borrill, J.

AU - Boscaleri, A.

AU - Cabella, P.

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 - Ferreira, P. G.

AU - Hivon, E.

AU - Jaffe, A. H.

AU - Kisner, T. S.

AU - Kunz, M.

AU - Jones, W. C.

AU - Lange, A. E.

AU - Liguori, M.

AU - Masi, S.

AU - Matarrese, S.

AU - Mauskopf, P. D.

AU - MacTavish, C. J.

AU - Melchiorri, A.

AU - Montroy, T. E.

AU - Natoli, P.

AU - Netterfield, C. B.

AU - Pascale, E.

AU - Piacentini, F.

AU - Pogosyan, D.

AU - Polenta, G.

AU - Prunet, S.

AU - Ricciardi, S.

AU - Romeo, G.

AU - Ruhl, J. E.

AU - Santini, P.

AU - Tegmark, M.

AU - Veneziani, M.

AU - Vittorio, N.

PY - 2007

Y1 - 2007

N2 - 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 functional 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 asat fNL as -300 < fNL < 650 at 68% CL and -800 NL < 1050 at 95% CL.

AB - 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 functional 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 asat fNL as -300 < fNL < 650 at 68% CL and -800 NL < 1050 at 95% CL.

KW - Cosmic microwave background

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U2 - 10.1086/524402

DO - 10.1086/524402

M3 - Article

AN - SCOPUS:47249127018

SN - 0004-637X

VL - 670

SP - L73-L76

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART 2

ER -

Searching for non-gaussian signals in the BOOMERANG 2003 CMB maps

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Keywords

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