FIVE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE OBSERVATIONS: ANGULAR POWER SPECTRA

By M. Nolta, J. Dunkley, R. Hill, Gary F. Hinshaw, E. Komatsu, D. Larson, L. Page, David N. Spergel, C. Bennett, B. Gold and 10 more. Astrophysical Journal Supplement Series, 2008

302 citations recorded by the source corpus.

We present the temperature and polarization angular power spectra of the cosmic microwave background derived from the first five years of Wilkinson Microwave Anisotropy Probe data. The five-year temperature spectrum is cosmic variance limited up to multipole ℓ = 530, and individual ℓ-modes have signal-to-noise ratio S/N >1 for ℓ < 920. The best-fitting six-parameter ΛCDM model has a reduced χ2 for ℓ = 33–1000 of χ2/ν = 1.06, with a probability to exceed of 9.3%. There is now significantly improved data near the third peak which leads to improved cosmological constraints. The temperature-polarization correlation is seen with high significance. After accounting for foreground emission, the low-ℓ reionization feature in the EE power spectrum is preferred by Δχ2 = 19.6 for optical depth τ = 0.089 by the EE data alone, and is now largely cosmic variance limited for ℓ = 2–6. There is no evidence for cosmic signal in the BB, TB, or EB spectra after accounting for foreground emission. We find that, when averaged over ℓ = 2–6, ℓ(ℓ + 1)CBBℓ/(2π) < 0.15 μK2 (95% CL).

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/df5637023b95dc23b040215c42fc9d581c3ef840

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Atomic and Molecular Physics, and Optics

Citations in the corpus

ACTPol: a polarization-sensitive receiver for the Atacama Cosmology Telescope (2010, background): “Data are from QUaD,(4) BICEP,(5) Boomerang,(6) CAPMAP,(7) CBI,(8) DASI,(9) and WMAP.(10) The”
Cosmological parameter constraints from SDSS luminous red galaxies: a new treatment of large-scale clustering (2009, background): “…2 ≤ ≤ 1000 and the temperature–polarization power spectrum for 2 ≤ ≤ 450 of the first 5 years of observations of the WMAP satellite (Hinshaw et al. 2009; Nolta et al. 2009), the bandpower temperature spectrum from the 2008 observations of the Arcminute Cosmology Bolometer Array Receiver…”
The Observed Growth of Massive Galaxy Clusters I: Statistical Methods and Cosmological Constraints (2009, methodology): “Our analysis of the CMB anisotropies uses 5-yr Wilkinson Microwave Anisotropy Probe (WMAP) data (Hill et al. 2009; Hinshaw et al. 2009; Nolta et al. 2009) with the March 2008 version of the WMAP likelihood code3 (Dunkley et al. 2009).”
Large-Angle Anomalies in the CMB (2010, background): “The tremendous success of the standard model of cosmology has been the agreement of the theory and observations on these small scales, allowing for the precise determination of the fundamental cosmological parameters [30].”
Modified Gravity and Cosmology (2011, background): “A general relativistic universe dominated by baryons cannot fit the most up to date observations of anisotropies in the CMB [984].”