A Measurement of Ω from the North American Test Flight of Boomerang

  title={A Measurement of $\Omega$ from the North American Test Flight of Boomerang},
  author={Alessandro Melchiorri and P. A. R. Ade and Paolo de Bernardis and J. J. Bock and Jullian Borrill and Andrea Boscaleri and Brendan P. Crill and G. de Troia and Philip C. Farese and Pedro G. Ferreira and Ken Ganga and Giancarlo De Gasperis and M. Giacometti and Viktor V. Hristov and Andrew H. Jaffe and Andrew E. Lange and Silvia Masi and Phillip Mauskopf and L. Miglio and Calvin B. Netterfield and Enzo Pascale and Francesco Piacentini and Giuseppe Romeo and John E. Ruhl and Nicola Vittorio},
  journal={The Astrophysical Journal Letters},
  pages={L63 - L66}
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… 
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