Python I, II, and III CMB Anisotropy Measurement Constraints on Open and

• Main Authors: Flat-λ Cdm Cosmogonies, Graça Rocha, Ken Ganga, Bharat Ratra, Stephen R. Platt, Naoshi Sugiyama, Krzysztof M. Górski
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 1999
• Subjects: South Pole; South pole
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.336.5138; http://arxiv.org/pdf/astro-ph/9905127v1.pdf

We use Python I, II, and III cosmic microwave background anisotropy data to constrain cosmogonies. We account for the Python beamwidth and calibration uncertainties. We consider open and spatially-flat-Λ cold dark matter cosmogonies, with nonrelativistic-mass density parameter Ω0 in the range 0.1–1, baryonic-mass density parameter ΩB in the range (0.005–0.029)h −2, and age of the universe t0 in the range (10–20) Gyr. Marginalizing over all parameters but Ω0, the combined Python data favors an open (spatially-flat-Λ) model with Ω0 ≃ 0.2 (0.1). At the 2 σ confidence level model normalizations deduced from the combined Python data are mostly consistent with those drawn from the DMR, UCSB South Pole 1994, ARGO, MAX 4 and 5, White Dish, and SuZIE data sets. Subject headings: cosmic microwave background—cosmology: observations—large-scale structure of the universe 1.