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WMAP

WMAP Data Product Images

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

WMAP Full-sky Temperature Maps

The images below represent full-sky maps of the cosmic microwave background anisotropy and foreground signal from our galaxy (in red). The 5 frequency maps are constructed from the differential time-ordered observations of the ten WMAP differencing assemblies. Galactic foreground is stongest in K band, weakest in V and W bands.

Please acknowledge the WMAP Science Team when using these images.

map of K-Band
 

K-Band Map
(23 GHz)
Linear scale from -200 to 200 uK

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JPEG(202Kb)
JPEG(911Kb)
 

map of Ka-band
 

Ka-Band Map
(33 GHz)
Linear scale from -200 to 200 uK

  JPEG(84Kb)
JPEG(296Kb)
JPEG(818Kb)
 

map of Q-Band
 

Q-Band Map
(41 GHz)
Linear scale from -200 to 200 uK

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JPEG(252Kb)
JPEG(903Kb)
 

map of V-Band
 

V-Band Map
(61 GHz)
Linear scale from -200 to 200 uK

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JPEG(262Kb)
JPEG(676Kb)
 

map of W-Band
 

W-Band Map
(94 GHz)
Linear scale from -200 to 200 uK

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WMAP QVW False Color Maps

Three-color combination images from the WMAP Q, V and W-band data. The dipole and high Galactic latitude anisotropy are visible.

Please acknowledge the WMAP Science Team when using these images.

3-color MEM model map from the K-band
 

Dipole Subtracted
Linear scale from -1 to 1 mK

  JPEG (127 Kb)
JPEG (272 Kb)
JPEG (863 Kb)

3-color MEM model map from the Ka-band
 

Dipole Included
Linear scale from -3.5 to 3.5 mK

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JPEG (473 Kb)
 
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WMAP CMB Power Spectra

The CMB angular power spectrum for WMAP, COBE, ACBAR, and CBI data. Note that the WMAP results are consistent with the other experiments, and that the combined WMAP and CBI points constrain the angular power spectrum of our sky with great accuracy and precision. The WMAP best fit model is also shown.

Please acknowledge the WMAP Science Team when using these images.

TT and TE power spectra
 

TT and TE Cross-Power Spectra

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PDF (41 Kb)
 
 
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WMAP Internal Linear Combination Map

The Internal Linear Combination Map is a weighted linear combination of the five WMAP frequency maps. The weights are computed using criteria which minimize the Galactic foreground contribution to the sky signal. The resultant map provides a low-contamination image of the CMB anisotropy.

Please acknowledge the WMAP Science Team when using these images.

ilc
 

Internal Linear Combination Map
Linear scale from -200 to 200 uK

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WMAP Foreground Model Maps, individual components

The synchrotron, free-free and thermal dust foreground models derived from WMAP data using the Maximum Entropy Method (MEM) are shown at the frequencies where each foreground is most dominant.

Please acknowledge the WMAP Science Team when using these images.

MEM model synchrotron map for K-band
 

Synchrotron map for K band
Linear scale from -1 to 5 mK

  PNG (57 Kb)
PNG(185 Kb)

MEM model free-free map for K-band
 

Free-free map for K band
Linear scale from -1.0 to 4.7 mK

  PNG (40 Kb)
PNG (131 Kb)

MEM model dust map for W-band
 

Dust map for W band
Linear scale from -0.5 to 2.3 mK

  PNG (45 Kb)
PNG (136 Kb)
 
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WMAP Foreground Model Maps, 3-color images

Three-color maps from the Maximum Entropy Method (MEM) model for the 5 WMAP frequency bands. These maps indicate which emission mechanism dominates as a function of frequency and sky position. Synchrotron is red, free-free is green, and thermal dust is blue.

Please acknowledge the WMAP Science Team when using these images.

3-color MEM model map from the K-band
 

K-Band Map
(23 GHz)
Logarithmic scale

  JPEG (153 Kb)
JPEG (288 Kb)
JPEG (764 Kb)

3-color MEM model map from the Ka-band
 

Ka-Band Map
(33 GHz)
Logarithmic scale

  JPEG (172 Kb)
JPEG (260 Kb)
JPEG (818 Kb)

3-color MEM model map from the Q-band
 

Q-Band Map
(41 GHz)
Logarithmic scale

  JPEG (127 Kb)
JPEG (250 Kb)
JPEG (989 Kb)

3-color MEM model map from the V-band
 

V-Band Map
(61 GHz)
Logarithmic scale

  JPEG (184 Kb)
JPEG (277 Kb)
JPEG (1 Mb)

3-color MEM model map from the W-band
 

W-Band Map
( 94 GHz)
Logarithmic scale

 

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JPEG (307 Kb)
JPEG (1.15 Mb)

 
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Objects in the Microwave Sky

A guide to the microwave sky for reference. This picture shows the large-scale emission from the Milky Way galaxy, including some of its notable components such as the Cygnus complex, the North Polar Spur, the Gum region, etc. The small circles show positions of significant microwave point sources. The brighter sources are labeled for reference.

Please acknowledge the WMAP Science Team when using these images.

guide to microwave sky
 

Microwave sky overlay

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PNG (162 KB)
JPEG (57 KB)
JPEG (279 KB)
PDF (275 KB) 
 
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WMAP Intensity Masks

WMAP uses a set of standard sky masks for certain data processing and analysis needs. The masking is based on the K-band signal levels, which each successive mask increasing the severity of the masking cut. The most severe cut is Kp0. Not shown are additional cuts made around point sources.

Please acknowledge the WMAP Science Team when using these images.

guide to microwave sky
 

Intensity Masks

  PNG (29 KB)
PNG(22 KB)
GIF (26 KB)
GIF (24 KB)
 
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WMAP Beams and Window Functions

WMAP uses in-flight observations of Jupiter to characterize the beam for each antenna feed. Window functions are computed from these observations for each of the ten differencing assemblies.

Please acknowledge the WMAP Science Team when using these images.

side A focal plane map
 

Side A Focal Plane Mosaic
Each beam response has been normalized to its peak value.
Linear scale from -.5 to 1

  PNG (57 Kb)

side B focal plane map
 

Side B Focal Plane Mosaic
Each beam response has been normalized to its peak value.
Linear scale from -0.5 to 1

  PNG (57 Kb)

MEM model dust map for W-band
 

WMAP Window Functions

  JPEG (43 Kb)
JPEG (91 Kb)
PNG (18 Kb)
PNG (19Kb ) 
 
For other WMAP-related images Click Here 
 
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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