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

@article{Melchiorri2000AMO, 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}, year={2000}, volume={536}, 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…

## 78 Citations

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## References

SHOWING 1-10 OF 24 REFERENCES

A Measurement of the Angular Power Spectrum of the Microwave Background Made from the High Chilean Andes

- Physics
- 1999

We report on a measurement of the angular spectrum of the anisotropy of the microwave sky at 30 and 40 GHz between l = 50 and l = 200. The data, covering roughly 600 deg2, support a rise in the…

The Gravitational Wave Contribution to the Cosmic Microwave Background Anisotropies

- Physics
- 1999

We study the possible contribution of a stochastic gravitational wave background to the anisotropy of the cosmic microwave background (CMB) in cold and mixed dark matter models. We test this…

UCSB South Pole 1994 Cosmic Microwave Background Anisotropy Measurement Constraints on Open and Flat-Λ Cold Dark Matter Cosmogonies

- Physics
- 1996

We develop methods to account for experimental and observational uncertainties in likelihood analyses of data from cosmic microwave background (CMB) anisotropy experiments and apply them to an…

Measurements of Ω and Λ from 42 High-Redshift Supernovae

- Physics
- 1998

We report measurements of the mass density, ΩM, and cosmological-constant energy density, ΩΛ, of the universe based on the analysis of 42 type Ia supernovae discovered by the Supernova Cosmology…

Power Spectra of the Cosmic Microwave Background and Density Fluctuations Seeded by Local Cosmic Strings

- Physics
- 1999

We compute the power spectra in the cosmic microwave background and cold dark matter (CDM) fluctuations seeded by strings, using the largest string simulations performed so far. We find that local…

Measuring cosmological parameters with cosmic microwave background experiments.

- PhysicsPhysical review letters
- 1994

The degree to which factors related to primordial energy density and gravitational wave fluctuations can be separately resolved from combined small- and large-angular-scale anisotropy observations is examined.

Why not consider closed universes

- Physics
- 1995

We consider structure formation and CMB anisotropies in a closed universe, both with and without a cosmological constant. The CMB angular power spectrum and the matter transfer function are…

The challenge of data analysis for future CMB observations

- Physics
- 1999

Ongoing observations of the Cosmic Microwave Background, such as the MAXIMA and BOOMERanG projects, are providing datasets of unprecedented quality and ever-increasing size. Exact analysis of the…

A Line of sight integration approach to cosmic microwave background anisotropies

- Physics
- 1996

We present a new method for calculating linear cosmic microwave background (CMB) anisotropy spectra based on integration over sources along the photon past light cone. In this approach the…