A Measurement of Omega from the North American Test Flight of Boomerang.
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</=Omega</=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
PA
de Bernardis P
Bock
JJ
Borrill
J
Boscaleri
A
Crill
BP
De Troia G
Farese
P
Ferreira
PG
Ganga
K
de Gasperis G
Giacometti
M
Hristov
VV
Jaffe
AH
Lange
AE
Masi
S
Mauskopf
PD
Miglio
L
Netterfield
CB
Pascale
E
Piacentini
F
Romeo
G
Ruhl
JE
Vittorio
N