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WMAP DR1 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/

Calibrated Sky Maps
Product
Download Page
Description No. of
Files/Size
I Maps (Individual Differencing Assemblies)
Temperature maps for each of ten differencing assemblies. More...
10 files 25 MB each
I Maps (per frequency)
Temperature maps for each of five frequencies. More...
5 files 25 MB each
Smoothed I Maps (per frequency)
Temperature maps at each frequency, smoothed to a common resolution. Useful for foreground analyses. More...
5 files25 MB each
Foreground Cleaned I Maps
Q, V and W band temperature maps from which template foregrounds have been removed. More...
8 files 25 MB each
Derived CMB Products
Product
Download Page
Description No. of
Files/Size
Combined TT Power Spectrum (includes binned version)
Best estimate of the temperature angular power spectrum of the CMB. Both binned and unbinned versions of the spectrum are provided. More...
2 files <= 53 KB each
28 TT Cross-Power Spectra(Q1xQ2, Q2xV1 , W3xW4,...)
Power spectra forming the basis of the combined TT power spectrum. More...
1 file 325 KB
TE Power Spectrum (includes binned version)
Best estimate of the temperature polarization angular power spectrum of the CMB. More...
2 files <=16 KB each
Likelihood code
FORTRAN90 code to compute Fisher matrices and model likelihood. More...
1 file 3 MB
Theoretical LCDM Power Spectra
Selected theoretical power spectra fit to WMAP data in combination with other datasets. More...
6 files <200 KB each
Temperature Correlation Function
Two-point temperature correlation function derived from the WMAP ILC map. More...
1 file 17 KB
Derived Foreground Products
Product
Download Page
Description No. of
Files/Size
Internal Linear Combination Map (includes region definition map)
Reduced-galaxy map produced via linear combination technique. More...
2 files 25 MB each
Synchrotron Maps (Max Entropy Method)
Derived maps of foreground synchrotron emission for each of 5 frequencies. More...
5 files 6 MB each
Free-Free Maps (Max Entropy Method)
Derived maps of foreground free-free emission for each of 5 frequencies. More...
5 files 6 MB each
Dust Maps (Max Entropy Method)
Derived maps of foreground dust emission for each of 5 frequencies. More...
5 files 6 MB each
Point Source Catalog
Catalog of WMAP point sources. More...
1 file 26 KB
Ancillary Data
Product
Download Page
Description No. of
Files/Size
Intensity Masks
Exclusion masks applied to temperature maps for purposes of analysis or map-making. More...
4 files 25 MB each
Far-Sidelobe Maps
Maps of beam response to signal beyond the Ruze radius, for each differencing assembly More...
10 files 1.6 MB each
Beam Maps
Maps of main and near-sidelobe beam response for the A and B sides of each differencing assembly. More...
10 files 1 MB each
Beam Transfer Functions
Derived from observations of Jupiter. The beam transfer function is the square root of the window function. More...
10 files ~20 KB each
Beam Radial Profiles
Symmetrized radial beam profiles for each WMAP differencing assembly. More...
10 files ~10 KB each
Time-Ordered Data
Product
Download Page
Description No. of
Files/Size
Calibrated Time-Ordered Data (archive with attitude, etc.)
Tar files containing up to ten FITS files; each of these contains one day of data. More...
37 files ~470 MB each
Simulated Data
Product
Download Page
Description No. of
Files/Size
Simulated Noise Maps
110 sky maps containing simulated instrument noise for each WMAP differencing assembly. More...
60 files 440 MB each
Third-Party Products
Product
Download Page
Description No. of
Files/Size
LILC Reduced-Foreground Map
Reduced galaxy map produced by Eriksen et al. using a variant of the ILC algorithm that employs a Lagrange multiplier, hence LILC. More...
1 file 12 MB
Simulated LILC Maps
An ensemble of simulated LILC maps, transformed to harmonic space, produced by Eriksen et al. for use with error analyses of the real LILC map. More...
2 files 130 MB each
TOH Reduced-Foreground Map
Reduced-galaxy map produced by Tegmark et al. using a multi-frequency combination technique. More...
2 files 12.3 MB each

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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