1999/05/11 by G. Rocha, Graca Rocha, Radoslaw Stompor +8 · 2 citations
Earth and Planetary Sciences · Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Geophysics and Gravity Measurements #astro-ph
paper · pdf · doi:10.1086/307886
published as Astrophys.J.525:1,1999 · 20 pages, 7 figures, accepted by ApJ
arxiv created 1999/05/11 · openalex publication_date 1999/11/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
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 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 combined Python data favor an open (spatially flat-Λ) model with Ω 0 ≃ 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.