WMAP DR3 Foreground Reduced Sky Maps Per Differencing AssemblyThe 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/" Coordinate System:
Galactic
Projection Type:
HEALPix, nested, res 9 (Nside=512) and res 10 (Nside=1024)
Resolution:
0.23°- 0.93° (frequency dependent)
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The foreground reduced skymaps were produced by removing a foreground model from the'unreduced' maps using the Foreground Template Model discussed in Hinshaw, et.al., 2006and Page, et.al, 2006; see those papers for details. Briefly, synchrotron, free-free, and dust emission templates weremodeled and then subtracted from the single year 'unreduced' maps. The goal was to produce a setof maps with the foreground removed while retaining WMAP's noise characteristics. Because the K and Ka maps were used to produce the foreground models, only Q, V, and W band foreground reduced maps were created and delivered to LAMBDA. As with the 'unreduced' maps, full three year maps were produced by performing a weighted,pixel-by-pixel, mean of the three single year maps; the N_Obs measurement was used to weight this mean.The N_Obs measurements were added together to produce the final, three year, N_Obs measurement. The same foreground template model was used to produce foreground reduced high resolution (res 10) V and W maps.
Additional Information
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