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WMAP

Wilkinson Microwave Anisotropy Probe

Product Name
Polarization Power Spectra (includes binned versions)
Mission
WMAP

Description

The TE and TB, EE, and BB power spectra are computed using a pseudo-Cl estimator for the region outside the nine year polarization mask in P and outside the analysis mask in T. The foreground-cleaned V band with uniform weighting is used for T. The combined foreground-cleaned Q and V bands are used for P. Polarization weighting uses the full Ninv weighting for l ≤ 16 and Nobs weighting for l > 16.

Unbinned TE and TB, EE, and BB power spectra are provided as a tables containing the following columns:

  1. the multipole moment l
  2. the power spectrum in units of μK2
  3. the error derived from the diagonal elements of the covariance matrix in units of μK2
  4. the portion of column 3 attributed to measurement errors
  5. the portion of column 3 attributed to cosmic variance, assuming the best-fit ΛCDM model.

The diagonal elements provide an estimate of the error, but should not be used as exact error bars. The complete Fisher matrix should be used for that purpose.

Binned versions of the TE and TB power spectra is also available in separate ASCII files with the following columns:

  1. the mean multipole moment l
  2. the smallest l contributing to the bin
  3. the largest l contributing to the bin
  4. the power spectrum in units of μK2
  5. the error for the binned value, computed from the diagonal elements of the covariance matrix in units of μK2
  6. the portion of column 5 attributed to measurement errors in units of μK2
  7. the portion of column 5 attributed to cosmic variance in units of μK2, assuming the best-fit ΛCDM model.

Additional Information

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A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC
Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. Eric R. Switzer
NASA Official: Dr. Eric R. Switzer
Web Curator: Mr. Michael R. Greason