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WMAP

WMAP Data Products

The data made available through this page has been updated. The most recent version of this data may be accessed through /product/map/current/

The WMAP skymaps used the HEALPix nested pixel ordering scheme in Galactic coordinates. For the convenience of users who do not have HEALPix software installed, we provide a series of FITS sky map files that give the sky coordinates of each pixel center for various resolutions.

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Derived CMB Products
Derived CMB Products
Product
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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 3--62KB each
TE Power Spectra Best estimates for the TE power spectra of the CMB. Both binned and unbinned versions are provided. More... 2 files 3--62KB each
EE and BB Power Spectra Best estimates for the EE and BB power spectra of the CMB. Both binned and unbinned versions are provided. More... 4 files 1--35KB 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 382MB
Chain Analysis Software Modified version of the CosmoMC getdist program to analyze WMAP Markov Chains More... 1 file 40.3kB
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. 1 file 694KB

Full Resolution Coadded Five Year Sky Maps
Full Resolution Coadded Five Year Sky Maps
Product
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Description No. Of
Files/Size
I Maps per Differencing Assembly (D/A) 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 24MB 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 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 48MB each
Foreground Reduced I,Q,U Maps per Differencing Assembly (D/A) Temperature and polarization (I,Q,U) maps for the Q1, Q2, V1, V2, W1, W2, W3, and W4 D/As at HEALPix Nside=512 (Res 9). More... 8 files 48MB each
Foreground Reduced I,Q,U Maps per Frequency Band Temperature and polarization (I,Q,U) maps for the Q, V, and W frequency bands at HEALPix Nside=512 (Res 9). More... 3 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. 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. More... 5 files 144MB each

Full Resolution Single Year Sky Maps
Full Resolution Single Year Sky Maps
Product
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Description No. Of
Files/Size
I Maps per Differencing Assembly (D/A) Temperature (I) maps for each D/A at HEALPix Nside=512 (Res 9) for TT analysis. More... 50 files 24MB each
High Resolution I Maps per Differencing Assembly (D/A) Temperature (I) maps for each D/A at HEALPix Nside=1024 (Res 10) for TT analysis. More... 50 files 96MB each
Foreground Reduced I Maps per Differencing Assembly (D/A) Foreground Reduced Temperature (I) maps for each D/A at HEALPix Nside=512 (Res 9) for TT and high-l polarization analysis. More... 40 files 24MB each
High Resolution Foreground Reduced I Maps per Differencing Assembly (D/A) Foreground Reduced Temperature (I) maps for each D/A at HEALPix Nside=1024 (Res 10) for TT and high-l polarization analysis. More... 40 files 96MB 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... 50 files 96MB each
Foreground Reduced I,Q,U Maps per Differencing Assembly (D/A) 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... 40 files 96MB 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. More... 50 files 144MB each

Reduced Resolution Sky Maps
Reduced Resolution Sky Maps
Product
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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... 50 files 68kB 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 each D/A at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More... 50 files 144.0MB 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... 50 files 157.5kB 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 each D/A at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). Plain and SVD versions are supplied. More... 100 files 576MB or 1.1GB each
Single Year Foreground Reduced Q,U Maps per Differencing Assembly (D/A) Foreground Reduced Polarization (Q,U) maps for selected D/As at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More... 45 files 30.9kB 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... 45 files 144.0MB each
Five Year Q,U Maps per Frequency Band Polarization (Q,U) maps for selected frequency bands at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More... 4 files 30.9kB each
Inverse Covariance Matrices for the Five Year Q,U Maps per Frequency Band Polarization (Q,U) pixel-to-pixel inverse covariance matrices for selected frequency bands at HEALPix Nside=16 (Res 4). More... 4 files 144MB each
Five Year Foreground Reduced Q,U Maps per Frequency Band Foreground Reduced Polarization (Q,U) maps for selected frequency bands at HEALPix Nside=16 (Res 4) degraded from Nside=512 (Res 9). More... 4 files 30.9kB each
Inverse Covariance Matrices for the Five Year Foreground Reduced Q,U Maps per Frequency Band Foreground Reduced Polarization (Q,U) pixel-to-pixel inverse covariance matrices for selected frequency bands at HEALPix Nside=16 (Res 4). 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. One per differencing assembly. More... 10 files, 56kB each

Derived Foreground Products
Derived Foreground Products
Product
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Description No. Of
Files/Size
Internal Linear Combination Map Reduced-galaxy map produced via linear combination technique. More... 1 file of 24MB
Point Source Catalog Catalog of WMAP point sources. More... 1 files of 44.6KB
Point Source Variability Table WMAP point source variability. More... 1 files of 201.6KB
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 of 1.5MB
MCMC-Chain Foreground Maps Maps of foreground synchrotron, free-free, and dust emission using an MCMC chain fitting technique. More... 14 files of 1.1MB
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 of 1.1MB
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 of 1.1MB
Foreground Templates Low noise templates for the removal of foreground from skymaps. More... 2 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... 10 files of 24MB each

Ancillary Data
Ancillary Data
Product
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Description No. Of
Files/Size
Masks Intensity and polarization exclusion masks for analysis and map-making. More... 9 files 6-96MB 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 5.5 MB 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 7.9kMB each

Time-Ordered Data
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... 92 files 1.7GB each
Uncalibrated Time-Ordered Data Compressed tar files containing the raw time-ordered data. More... 92 files, 1.1GB each
Optimal Time-Domain Filters Optimal time-domain filters used in the map-making procedure. More... 5 files 4.6MB each

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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