| Constraints On Cosmological Parameters From Current Cmb Data (2007) | |||||||||||||
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| . We discuss the constraints one can place on cosmological parameters using current cosmic microwave background data. A standard Ø 2 -- minimization over band--power estimates is first presented, followed by a discussion of the more correct likelihood approach. We propose an approximation to the complete likelihood function of an arbitrary experiment requiring only limited and easily found information about the observations. Examination of both open models --(\Omega ; h; Q;n) -- and flat models(\Omega +\Omega = 1) -- (\Omega ;\Omega b ; h; Q;n) -- leaves one rather robust result: models with small curvature are favored. 1 Introduction Current cosmic microwave background (CMB) results already permit some constraints to be placed on certain cosmological parameters, such as the density parameter,\Omega\Gamma the Hubble constant, Ho j h(100 km/s/Mpc), etc... (Bond & Jaffe 1996; Lineweaver et al. 1997; Hancock et al. 1998; Bartlett et al. 1998a). The present data set is most clearly... | |||||||||||||
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