OVRO CMB anisotropy measurement constraints on flat-λ and open CDM cosmogonies

• Main Authors: Mukherjee, Pia, Souradeep, Tarun, Ratra, Bharat, Sugiyama, Naoshi, Gorski, Krzsztof M.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: World Scientific Publishing Company 2003
• Subjects: QC Physics; South Pole; South pole
• Online Access: http://repository.ias.ac.in/107612/; http://www.worldscientific.com/doi/abs/10.1142/S0217732303011022

We use Owens Valley Radio Observatory (OVRO) cosmic microwave background (CMB) anisotropy data to constrain cosmological parameters. We account for the OVRO beamwidth and calibration uncertainties, as well as the uncertainty induced by the removal of non-CMB foreground contamination. We consider open and spatially-flat-Λ cold dark matter cosmogonies, with nonrelativistic-mass density parameter Ω 0 in the range 0.1–1, baryonic-mass density parameter Ω B in the range (0.005–0.029)h -2 , and age of the universe t 0 in the range (10–20) Gyr. Marginalizing over all parameters but Ω 0 , the OVRO data favors an open (spatially-flat-Λ) model with Ω 0 ≃ 0.33 (0.1). At the 2σ confidence level model normalizations deduced from the OVRO data are mostly consistent with those deduced from the DMR, UCSB South Pole 1994, Python I-III, ARGO, MAX 4 and 5, White Dish, and SuZIE data sets.