First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Parameter Estimation Methodology
Licia Verde,Hiranya V. Peiris,David N. Spergel,M. R. Nolta,Charles L. Bennett,Mark Halpern,Gary Hinshaw,N. Jarosik,Alan J. Kogut,Michele Limon,Michele Limon,S. S. Meyer,Lyman A. Page,Gregory S. Tucker,Gregory S. Tucker,Gregory S. Tucker,Edward J. Wollack,Edward L. Wright +17 more
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In this paper, the authors compare the Wilkinson Microwave Anisotropy Probe (WMAP) measurements of the cosmic microwave background (CMB) and other complementary data sets to theoretical models.Abstract:
We describe our methodology for comparing the Wilkinson Microwave Anisotropy Probe (WMAP) measurements of the cosmic microwave background (CMB) and other complementary data sets to theoretical models. The unprecedented quality of the WMAP data and the tight constraints on cosmological parameters that are derived require a rigorous analysis so that the approximations made in the modeling do not lead to significant biases. We describe our use of the likelihood function to characterize the statistical properties of the microwave background sky. We outline the use of the Monte Carlo Markov Chains to explore the likelihood of the data given a model to determine the best-fit cosmological parameters and their uncertainties. We add to the WMAP data the l 700 Cosmic Background Imager (CBI) and Arcminute Cosmology Bolometer Array Receiver (ACBAR) measurements of the CMB, the galaxy power spectrum at z ~ 0 obtained from the Two-Degree Field Galaxy Redshift Survey (2dFGRS), and the matter power spectrum at z ~ 3 as measured with the Lyα forest. These last two data sets complement the CMB measurements by probing the matter power spectrum of the nearby universe. Combining CMB and 2dFGRS requires that we include in our analysis a model for galaxy bias, redshift distortions, and the nonlinear growth of structure. We show how the statistical and systematic uncertainties in the model and the data are propagated through the full analysis.read more
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Journal ArticleDOI
First year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Determination of cosmological parameters
David N. Spergel,Licia Verde,Hiranya V. Peiris,Eiichiro Komatsu,M. R. Nolta,Charles L. Bennett,Mark Halpern,Gary Hinshaw,N. Jarosik,Alan J. Kogut,Michele Limon,Michele Limon,S. S. Meyer,Lyman A. Page,Gregory S. Tucker,Gregory S. Tucker,Gregory S. Tucker,Janet L. Weiland,Edward J. Wollack,Edward L. Wright +19 more
TL;DR: In this article, the authors find that the emerging standard model of cosmology, a flat -dominated universe seeded by a nearly scale-invariant adiabatic Gaussian fluctuations, fits the WMAP data.
Journal ArticleDOI
Wilkinson Microwave Anisotropy Probe (WMAP) three year results: implications for cosmology
David N. Spergel,Rachel Bean,Rachel Bean,Olivier Doré,Olivier Doré,M. R. Nolta,M. R. Nolta,Charles L. Bennett,Charles L. Bennett,Gary Hinshaw,Norman Jarosik,Eiichiro Komatsu,Eiichiro Komatsu,Lyman A. Page,Hiranya V. Peiris,Hiranya V. Peiris,Licia Verde,Licia Verde,M. Halpern,R. S. Hill,A. Kogut,Michele Limon,S. S. Meyer,N. Odegard,Gregory S. Tucker,Jan Weiland,Edward J. Wollack,E. L. Wright +27 more
TL;DR: In this article, a simple cosmological model with only six parameters (matter density, Omega_m h^2, baryon density, BH density, Hubble Constant, H_0, amplitude of fluctuations, sigma_8, optical depth, tau, and a slope for the scalar perturbation spectrum, n_s) was proposed to fit the three-year WMAP temperature and polarization data.
Journal ArticleDOI
Nine-year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
Gary Hinshaw,Davin Larson,Eiichiro Komatsu,David N. Spergel,David N. Spergel,Charles L. Bennett,Joanna Dunkley,Michael R. Nolta,Mark Halpern,Robert S. Hill,N. Odegard,Lyman A. Page,Kendrick M. Smith,Kendrick M. Smith,Janet L. Weiland,B. Gold,N. Jarosik,Alan J. Kogut,Michele Limon,S. S. Meyer,Gregory S. Tucker,Edward J. Wollack,Edward L. Wright +22 more
TL;DR: In this paper, the authors present cosmological parameter constraints based on the final nine-year WMAP data, in conjunction with a number of additional cosmology data sets.
Journal ArticleDOI
First year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Preliminary maps and basic results
Charles L. Bennett,Mark Halpern,Gary Hinshaw,N. Jarosik,Alan J. Kogut,Michele Limon,Michele Limon,S. S. Meyer,Lyman A. Page,David N. Spergel,Gregory S. Tucker,Gregory S. Tucker,Gregory S. Tucker,Edward J. Wollack,Edward L. Wright,Cris W. Barnes,M. R. Greason,Robert S. Hill,Eiichiro Komatsu,M. R. Nolta,N. Odegard,Hiranya V. Peiris,Licia Verde,Janet Weiland +23 more
TL;DR: In this paper, the authors present full sky microwave maps in five frequency bands (23 to 94 GHz) from the WMAP first year sky survey, which are consistent with the 7 in. full-width at half-maximum (FWHM) Cosmic Background Explorer (COBE) maps.
Journal ArticleDOI
Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results
Charles L. Bennett,Davin Larson,Janet L. Weiland,N. Jarosik,Gary Hinshaw,N. Odegard,Kendrick M. Smith,Kendrick M. Smith,Robert S. Hill,B. Gold,Mark Halpern,Eiichiro Komatsu,Michael R. Nolta,Lyman A. Page,David N. Spergel,David N. Spergel,Edward J. Wollack,Joanna Dunkley,Alan J. Kogut,Michele Limon,S. S. Meyer,Gregory S. Tucker,Edward L. Wright +22 more
TL;DR: The final nine-year maps and basic results from the Wilkinson Microwave Anisotropy Probe (WMAP) mission are presented in this paper, where the authors present a highly constrained Lambda-CDM cosmological model with precise and accurate parameters.
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