ARGO CMB Anisotropy Measurement Constraints on Open and Flat-Lambda CDM Cosmogonies

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dc.creatorRatra, Bharat
dc.creatorGanga, Ken
dc.creatorStompor, Radoslaw
dc.creatorSugiyama, Naoshi
dc.creatorde Bernardis, Paolo
dc.creatorGorski, Krzysztof M.
dc.date1998-07-29
dc.date.accessioned2026-07-07T11:34:08Z
dc.date.available2026-07-07T11:34:08Z
dc.descriptionWe use data from the ARGO cosmic microwave background (CMB) anisotropy experiment to constrain cosmogonies. We account for the ARGO beamwidth and calibration uncertainties, and marginalize over the offset removed from the data. Our derived amplitudes of the CMB anisotropy detected by the ARGO experiment are smaller than those derived previously. We consider open and spatially-flat-Lambda cold dark matter cosmogonies, with clustered-mass density parameter Omega_0 in the range 0.1-1, baryonic-mass density parameter Omega_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 Omega_0, the ARGO data favors an open (spatially-flat-Lambda) model with Omega_0= 0.23 (0.1). However, these numerical values are model dependent. At the 2 sigma confidence level model normalizations deduced from the ARGO data are consistent with those drawn from the UCSB South Pole 1994, MAX 4+5, White Dish, and SuZIE data sets. The ARGO open model normalizations are also consistent with those deduced from the DMR data. However, for most spatially-flat-Lambda models the DMR normalizations are more than 2 sigma above the ARGO ones.
dc.description21 pages of latex. Uses aaspp4.sty. 8 figures included. ApJ in press
dc.identifierhttps://arxiv.org/abs/astro-ph/9807298
dc.identifierhttp://arxiv.org/abs/astro-ph/9807298
dc.identifierAstrophys.J.510:11-19,1999
dc.identifierdoi:10.1086/306577
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/198141
dc.subjectAstrophysics
dc.titleARGO CMB Anisotropy Measurement Constraints on Open and Flat-Lambda CDM Cosmogonies
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