We use the angular power spectrum of the cosmic microwave background, measured during the North American test flight of the Boomerang experiment, to constrain the geometry of the universe. Within the class of cold dark matter models, we find that the overall fractional energy density of the universe {$\Omega$ is constrained to be 0.85\lt=$\Omega$\lt=1.25 at the 68\% confidence level. Combined with the COBE measurement, the data on degree scales from the Microwave Anisotropy Telescope in Chile, and the high-redshift supernovae data, we obtain new constraints on the fractional matter density and the cosmological constant. }

Melchiorri, A., Ade, P., de Bernardis, P., Bock, J., Borrill, J., Boscaleri, A., et al. (2000). A Measurement of {$\Omega$ from the North American Test Flight of Boomerang}. THE ASTROPHYSICAL JOURNAL LETTERS, 536, L63-L66 [10.1086/312744].

A Measurement of {$\Omega$ from the North American Test Flight of Boomerang}

DE TROIA, GRAZIA;DE GASPERIS, GIANCARLO;VITTORIO, NICOLA
2000

Abstract

We use the angular power spectrum of the cosmic microwave background, measured during the North American test flight of the Boomerang experiment, to constrain the geometry of the universe. Within the class of cold dark matter models, we find that the overall fractional energy density of the universe {$\Omega$ is constrained to be 0.85\lt=$\Omega$\lt=1.25 at the 68\% confidence level. Combined with the COBE measurement, the data on degree scales from the Microwave Anisotropy Telescope in Chile, and the high-redshift supernovae data, we obtain new constraints on the fractional matter density and the cosmological constant. }
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/05 - Astronomia e Astrofisica
English
Con Impact Factor ISI
Cosmology: Cosmic Microwave Background, Cosmology: Dark Matter, Methods: Data Analysis
Melchiorri, A., Ade, P., de Bernardis, P., Bock, J., Borrill, J., Boscaleri, A., et al. (2000). A Measurement of {$\Omega$ from the North American Test Flight of Boomerang}. THE ASTROPHYSICAL JOURNAL LETTERS, 536, L63-L66 [10.1086/312744].
Melchiorri, A; Ade, P; de Bernardis, P; Bock, J; Borrill, J; Boscaleri, A; Crill, B; DE TROIA, G; Farese, P; Ferreira, P; Ganga, K; DE GASPERIS, G; Giacometti, M; Hristov, V; Jaffe, A; Lange, A; Masi, S; Mauskopf, P; Miglio, L; Netterfield, C; Pascale, E; Piacentini, F; Romeo, G; Ruhl, J; Vittorio, N
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/66799
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