Fast cosmological parameter estimation from microwave background temperature and polarization power spectra
نویسندگان
چکیده
منابع مشابه
Efficient Cosmological Parameter Estimation from Microwave Background Anisotropies
We revisit the issue of cosmological parameter estimation in light of current and upcoming highprecision measurements of the cosmic microwave background power spectrum. Physical quantities which determine the power spectrum are reviewed, and their connection to familiar cosmological parameters is explicated. We present a set of physical parameters, analytic functions of the usual cosmological p...
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Forthcoming cosmic microwave background experiments (CMB) will provide precise new tests of structure-formation theories. The geometry of the Universe may be determined robustly, and the classical cosmological parameters, such as the cosmological constant, baryon density, and Hubble constant, may be determined as well. In addition, the “inflationary observables,” which parameterize the shapes a...
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We report results from the second and third seasons of observation with the QUaD experiment. Angular power spectra of the cosmic microwave background are derived for both temperature and polarization at both 100 GHz and 150 GHz, and as cross-frequency spectra. All spectra are subjected to an extensive set of jackknife tests to probe for possible systematic contamination. For the implemented dat...
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The recent high-quality measurements of the Cosmic Microwave Background anisotropies and polarization provided by ground-based, balloon-borne and satellite experiments have presented cosmologists with the possibility of studying the large scale properties of our universe with unprecedented precision. Here I review the current status of observations and constraints on theoretical models.
متن کاملCosmological-parameter determination with microwave background maps.
The angular power spectrum of the cosmic microwave background ~CMB! contains information on virtually all cosmological parameters of interest, including the geometry of the Universe (V), the baryon density, the Hubble constant (h), the cosmological constant (L), the number of light neutrinos, the ionization history, and the amplitudes and spectral indices of the primordial scalar and tensor per...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2004
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.70.023005