Release Notes for the Cosmological Parameters Table

The data made available through this page has been updated. The most recent version of this data may be accessed through https://lambda.gsfc.nasa.gov/product/wmap/current/

  • 10 January 2007
    • All of the entries were updated with better-converged chains in mid-2006. These are denoted "v2p1" chains in the Table. The results of this reprocessing did not materially affect any cosmological conclusions.
    • The following table entries have been updated with new parameter values and chains to reflect the changes in the low-l likelihood and the point source correction. These are denoted "v2p2" in the Table entries.
      • lcdm/wmap
      • lcdm/all
      • lcdm+sz=0/wmap
      • m2phi2/wmap (new)
  • 12 January 2007
    • Three of the four new chains (lcdm/all, lcdm+sz=0/wmap, m2phi2/wmap) were updated by adding a constant offset to the log likelihood to bring them into agreement with the convention adopted with the other chains.
  • 25 January 2007
    • The best-fit matter power spectra, P(k), are provided for all the supported model/dataset combinations in the table. Each of these files has two columns. The first column is k/h in units of Mpc-1. The second column is the linear matter power spectrum P(k), defined such that the variance is:
      σ2 = (2π)-3 ∫d3k P(k)

Cosmological Parameters Table

A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC
Goddard Space Flight Center, National Aeronautics and Space Administration
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LAMBDA Director: Dr. Thomas M. Essinger-Hileman
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