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WMAP DR4 Data Products

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/"

Derived CMB Products
Product
Download Page
Description No. of
Files/Size
TT Power Spectra
Best estimates for the TT power spectra of the CMB. Both binned and unbinned versions are provided. More...
2 files 4--86kB each
TE Power Spectra
Best estimates for the TE power spectra of the CMB. Both binned and unbinned versions are provided. More...
2 files 4--58kB each
TB Power Spectra
Best estimates for the TB power spectra of the CMB. Both binned and unbinned versions are provided. More...
2 files 4--58kB each
EE Power Spectra
Best estimates for the EE power spectra of the CMB. Both binned and unbinned versions are provided. More...
2 files 4--58kB each
BB Power Spectra
Best estimates for the BB power spectra of the CMB. Both binned and unbinned versions are provided. More...
3 files 2--93kB each
Cosmological Parameter Table
Tool to search for WMAP parameter results. More...
N/A
Likelihood Software
Fortran90 code to compute Fisher and Master matrices, and to compute model likelihood. More...
1 file 988MB
Markov Chain Analysis Software Patch
A patch to the CosmoMCMarkov Chain Analysis Software package to assist in analyzing WMAP Markov Chains. More...
1 file 4.77kB each
Predicted SZ Power Spectrum
The angular power spectrum due to the Sunyaev-Zeldovich effect, as predicted by Komatsu & Seljak (2002). Results for each of the 5 WMAP observing frequencies are given. More...
1 file 694kB each
Full Resolution Coadded Seven Year Sky Maps
Product
Download Page
Description No. of
Files/Size
I Maps per Differencing Assembly
Temperature (I) maps for each D/A at HEALPix Nside=512 (Res 9) for TT analysis. More...
10 files 24MB each
I Maps per Frequency Band
Temperature (I) maps for each frequency band at HEALPix Nside=512 (Res 9) for TT analysis. More...
5 files 96MB each
Smoothed I Maps per Differencing Assembly (D/A)
Temperature (I) maps for each D/A smoothed to 1o resolution at HEALPix Nside=512 (Res 9). More...
10 files 24MB each
Smoothed I Maps per Frequency Band
Temperature (I) maps for each frequency band smoothed to 1o resolution at HEALPix Nside=512 (Res 9). More...
5 files 24MB each
I,Q,U Maps per Differencing Assembly (D/A)
Temperature and polarization (I,Q,U) maps for each D/A at HEALPix Nside=512 (Res 9) for TT and high-l polarization analysis. More...
10 files 96MB each
I,Q,U Maps per Frequency Band
Temperature and polarization (I,Q,U) maps for each frequency band at HEALPix Nside=512 (Res 9) for TT and high-l polarization analysis. More...
5 files 96MB each
Smoothed I,Q,U Maps per Differencing Assembly (D/A)
Temperature and polarization (I,Q,U) maps for each D/A smoothed to 1o resolution at HEALPix Nside=512 (Res 9). More...
10 files 96MB each
Smoothed I,Q,U Maps per Frequency Band
Temperature and polarization (I,Q,U) maps for each frequency band smoothed to 1o resolution at HEALPix Nside=512 (Res 9). More...
5 files 96MB each
Foreground Reduced I,Q,U Maps per Differencing Assembly (D/A)
Temperature and polarization (I,Q,U) maps for the Ka1, Q1, Q2, V1, V2, W1, W2, W3, and W4 D/As at HEALPix Nside=512 (Res 9). More...
9 files 48MB each
Foreground Reduced I,Q,U Maps per Frequency Band
Temperature and polarization (I,Q,U) maps for the Ka, Q, V, and W frequency bands at HEALPix Nside=512 (Res 9). More...
4 files 48MB each
I,Q,U,S Maps per Differencing Assembly (D/A)
Temperature and polarization (I,Q,U,S) maps for each D/A at HEALPix Nside=512 (Res 9) for TT and high-l polarization analysis. These files contain the same data for I, Q, and U as the files above, but they additionally include the "spurious polarization" signal maps for users who wish to account for the small covariance between Q, U, & S. More...
10 files 144MB each
I,Q,U,S Maps per Frequency Band
Temperature and polarization (I,Q,U,S) maps for each frequency band at HEALPix Nside=512 (Res 9) for TT and high-l polarization analysis. These files contain the same data for I, Q, and U as the files above, but they additionally include the "spurious polarization" signal maps for users who wish to account for the small covariance between Q, U, & S. More...
5 files 144MB each
Full Resolution Single Year Sky Maps
Product
Download Page
Description No. of
Files/Size
I Maps per Differencing Assembly
Temperature (I) maps for each D/A at HEALPix Nside=512 (Res 9) for TT analysis. More...
70 files 24MB each
High Resolution I Maps per Differencing Assembly
Temperature (I) maps for each D/A at HEALPix Nside=1024 (Res 10) for TT analysis. More...
70 files 96MB each
Foreground Reduced I Maps per Differencing Assembly
Foreground Reduced Temperature (I) maps for each D/A at HEALPix Nside=512 (Res 9) for TT and high-l polarization analysis. More...
56 files 24MB each
High Resolution Foreground Reduced I Maps per Differencing Assembly
Foreground Reduced Temperature (I) maps for each D/A at HEALPix Nside=1024 (Res 10) for TT and high-l polarization analysis. More...
56 files 96MB each
I,Q,U Maps per Differencing Assembly
Temperature and polarization (I,Q,U) maps for each D/A at HEALPix Nside=512 (Res 9) for TT and high-l polarization analysis. More...
70 files 96MB each
Foreground Reduced I,Q,U Maps per Differencing Assembly
Foreground Reduced Temperature and Polarization (I,Q,U) maps for each D/A at HEALPix Nside=512 (Res 9) for TT and high-l polarization analysis. More...
63 files 24MB each
I,Q,U,S Maps per Differencing Assembly
Temperature and polarization (I,Q,U,S) maps for each D/A at HEALPix Nside=512 (Res 9) for TT and high-l polarization analysis. These files contain the same data for I, Q, and U as the files above, but they additionally include the "spurious polarization" signal maps for users who wish to account for the small covariance between Q, U, & S. More...
70 files144MB each
Reduced Resolution Sky Maps
Product
Download Page
Description No. of
Files/Size
Single Year Q,U Maps per Differencing Assembly (D/A)
Polarization (Q,U) maps for each D/A at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More...
70 files 70kB each
Inverse Covariance Matrices for the Single Year Q,U Maps per Differencing Assembly (D/A)
Polarization (Q,U) pixel-to-pixel inverse covariance matrices for selected D/As at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More...
70 files 144MB each
Single Year I,Q,U,S Maps per Differencing Assembly (D/A)
Temperature and Polarization (I,Q,U,S) maps for each D/A at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More...
70 files 157kB each
Inverse Covariance Matrices for the Single Year I,Q,U,S Maps per Differencing Assembly (D/A)
Temperature and Polarization (I,Q,U,S) pixel-to-pixel inverse covariance matrices for selected D/As at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More...
70 files 576MB each
Single Year Foreground Reduced Q,U Maps per Differencing Assembly (D/A)
Foreground Reduced Polarization (Q,U) maps for selected D/A at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More...
63 files 70kB each
Inverse Covariance Matrices for the Single Year Foreground Reduced Q,U Maps per Differencing Assembly (D/A)
Foreground Reduced Polarization (Q,U) pixel-to-pixel inverse covariance matrices for selected D/As at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More...
63 files 144MB each
Seven Year Q,U Maps per Frequency Band
Polarization (Q,U) maps for each frequency band at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More...
5 files 31kB each
Inverse Covariance Matrices for the Seven Year Q,U Maps per Frequency Band
Polarization (Q,U) pixel-to-pixel inverse covariance matrices for each frequency band at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More...
5 files 144MB each
Seven Year Foreground Reduced Q,U Maps per Frequency Band
Foreground Reduced Polarization (Q,U) maps for each frequency band at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More...
4 files 31kB each
Inverse Covariance Matrices for the Seven Year Foreground Reduced Q,U Maps per Frequency Band
Foreground Reduced Polarization (Q,U) pixel-to-pixel inverse covariance matrices for each frequency band at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More...
4 files 144MB each
Loss Imbalance Templates
Polarization templates (Q,U) that trace the effect of a small transmission imbalance between the A & B sides of the instrument. Two per differencing assembly. More...
20 files 56kB each
Derived Foreground Products
Product
Download Page
Description No. of
Files/Size
Internal Linear Combination Map
Reduced-galaxy map produced via linear combination technique. More...
2 files 24MB each
Point Source Catalog
Catalog of WMAP point sources. More...
1 file 42.4kB each
Point Source Variability Table
WMAP point source variability listing. More...
1 file 354kB each
Max Entropy Method Foreground Emission Maps
Maps of foreground synchrotron, free-free, and dust emission for each of the five frequencies derived using the maximum entropy method. More...
15 files 1.5MB each
MCMC-Chain Foreground Maps
Maps of foreground synchrotron, free-free, and dust emission using an MCMC chain fitting technique. More...
14 files 1.1MB each
MCMC-Chain Foreground Maps - Shifted Spinning Dust Model
Maps of foreground synchrotron, free-free, and dust emission using an MCMC chain fitting technique that implemented a shifted spinning dust fitting model. More...
13 files 1.1MB each
MCMC-Chain Foreground Maps - Synchrotron Steepening Model
Maps of foreground synchrotron, free-free, and dust emission using an MCMC chain fitting technique that implemented a steepening synchrotron fitting model. More...
14 files 1.1MB each
Foreground Templates
Low noise templates for the removal of foreground from skymaps. More...
3 files
Smoothed Single Year K1 and Ka1 Sky Maps
K1 and Ka1 WMAP maps used with the foreground template to remove foreground emission from skymaps. More...
14 files 24MB each
Ancillary Data
Product
Download Page
Description No. of
Files/Size
Masks
Intensity and polarization exclusion masks for analysis and map-making. More...
12 files 33kB--96MB each
Beam Transfer Functions
Derived from observations of Jupiter. The beam transfer function is the square root of the window function. More...
10 files 16-44kB each
Beam Maps
Maps of main and near-sidelobe beam response for the A and B sides of each differencing assembly (D/A). More...
10 files 5.5MB each
Beam Radial Profiles
Symmetrized radial beam profiles for each WMAP D/A. More...
10 files 26-51kB each
Far-Sidelobe Beam Maps
Maps of beam response to signal across the entire sky in spacecraft coordinates for each D/A. More...
10 files 1.5MB each
Bandpass Frequency Response
Files showing the frequency response of each detector in each radiometer. More...
20 files 8.1kB each
Time-Ordered Data
Product
Download Page
Description No. of
Files/Size
Calibrated Time Ordered Data
Compressed tar files containing the calibrated time-ordered data. More...
128 files 1.7GB each
Uncalibrated Time Ordered Data
Compressed tar files containing the uncalibrated time-ordered data. More...
128 files 1.1GB each
Optimal Time-Domain Filters
Optimal time-domain filters used in the map-making procedure. More...
7 files 4.3MB each
Simulated Data Sky Maps
Product
Download Page
Description No. of
Files/Size
I Maps per Differencing Assembly
Temperature (I) maps for each D/A at HEALPix Nside=512 (Res 9) for TT analysis. More...
70 files 24MB each
Foreground Reduced I Maps per Differencing Assembly
Foreground Reduced Temperature (I) maps for each D/A at HEALPix Nside=512 (Res 9) for TT and high-l polarization analysis. More...
56 files 24MB each
I,Q,U Maps per Differencing Assembly
Temperature and polarization (I,Q,U) maps for each D/A at HEALPix Nside=512 (Res 9) for TT and high-l polarization analysis. More...
70 files 96MB each
I,Q,U,S Maps per Differencing Assembly
Temperature and polarization (I,Q,U,S) maps for each D/A at HEALPix Nside=512 (Res 9) for TT and high-l polarization analysis. These files contain the same data for I, Q, and U as the files above, but they additionally include the "spurious polarization" signal maps for users who wish to account for the small covariance between Q, U, & S. More...
70 files 144MB each
Model Sky Maps per Differencing Assembly
Maps of the model sky components used in generating the simulated time-ordered data archive. The simulated sky map products are constructed from this simulated TOD. More...
10 files 432MB each

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. Thomas M. Essinger-Hileman
NASA Official: Dr. Thomas M. Essinger-Hileman
Web Curator: Mr. Michael R. Greason