A measurement of Ω from the North American test flight of Boomerang

Melchiorri, A., Ade, Peter A. R. ORCID: https://orcid.org/0000-0002-5127-0401, de Bernardis, P., Bock, J. J., Borrill, J., Boscaleri, A., Crill, B. P., De Troia, G., Farese, P., Ferreira, P. G., Ganga, K., de Gasperis, G., Giacometti, M., Hristov, V. V., Jaffe, A. H., Lange, A. E., Masi, S., Mauskopf, Philip Daniel ORCID: https://orcid.org/0000-0001-6397-5516, Miglio, L., Netterfield, C. B., Pascale, Enzo ORCID: https://orcid.org/0000-0002-3242-8154, Piacentini, F., Romeo, G., Ruhl, J. E. and Vittorio, N. 2000. A measurement of Ω from the North American test flight of Boomerang. Astrophysical Journal 536 (2) , L63. 10.1086/312744

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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 Ω is constrained to be 0.85 ≤ Ω ≤ 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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Uncontrolled Keywords:	cosmic microwave background; dark matter; methods: data analysis
Publisher:	Institute of Physics
ISSN:	0004-637X
Last Modified:	24 Oct 2022 11:12
URI:	https://orca.cardiff.ac.uk/id/eprint/47257

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