C
Charles L. Bennett
Researcher at Johns Hopkins University
Publications - 530
Citations - 111471
Charles L. Bennett is an academic researcher from Johns Hopkins University. The author has contributed to research in topics: Cosmic microwave background & CMB cold spot. The author has an hindex of 99, co-authored 491 publications receiving 106010 citations. Previous affiliations of Charles L. Bennett include Brandeis University & University of California.
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Journal ArticleDOI
Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
Eiichiro Komatsu,Jo Dunkley,M. R. Nolta,Charles L. Bennett,B. Gold,Gary Hinshaw,Norman Jarosik,David L. Larson,Michele Limon,L. Page,David N. Spergel,Mark Halpern,Robert S. Hill,A. Kogut,S. S. Meyer,G. S. Tucker,Janet Weiland,Edward J. Wollack,Edward L. Wright +18 more
TL;DR: In this paper, the authors show that the tensor-to-scalar ratio r 1 is disfavored regardless of r. They provide a set of "WMAP distance priors, to test a variety of dark energy models.
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
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,Edward J. Wollack,Edward L. Wright,Cris W. Barnes,M. R. Greason,Robert S. Hill,Eiichiro Komatsu,M. R. Nolta,N. Odegard,H. V. Peirs,Licia Verde,Janet Weiland +21 more
Abstract: We present full sky microwave maps in five bands (23 to 94 GHz) from the WMAP first year sky survey. Calibration errors are 1 per mode to l=658. The temperature-polarization cross-power spectrum reveals both acoustic features and a large angle correlation from reionization. The optical depth of reionization is 0.17 +/- 0.04, which implies a reionization epoch of 180+220-80 Myr (95% CL) after the Big Bang at a redshift of 20+10-9 (95% CL) for a range of ionization scenarios. This early reionization is incompatible with the presence of a significant warm dark matter density. The age of the best-fit universe is 13.7 +/- 0.2 Gyr old. Decoupling was 379+8-7 kyr after the Big Bang at a redshift of 1089 +/- 1. The thickness of the decoupling surface was dz=195 +/- 2. The matter density is Omega_m h^2 = 0.135 +0.008 -0.009, the baryon density is Omega_b h^2 = 0.0224 +/- 0.0009, and the total mass-energy of the universe is Omega_tot = 1.02 +/- 0.02. The spectral index of scalar fluctuations is fit as n_s = 0.93 +/- 0.03 at wavenumber k_0 = 0.05 Mpc^-1, with a running index slope of dn_s/d ln k = -0.031 +0.016 -0.018 in the best-fit model. This flat universe model is composed of 4.4% baryons, 22% dark matter and 73% dark energy. The dark energy equation of state is limited to w<-0.78 (95% CL). Inflation theory is supported with n_s~1, Omega_tot~1, Gaussian random phases of the CMB anisotropy, and superhorizon fluctuations. An admixture of isocurvature modes does not improve the fit. The tensor-to-scalar ratio is r(k_0=0.002 Mpc^-1)<0.90 (95% CL).
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.