Wilkinson Microwave Anisotropy Probe DR4The 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/" DR4 MCMC Foreground MapsCoordinate System:
Galactic
Projection Type:
HEALPix, nested, res 6 (Nside=64)
Resolution:
1^{°}
Download Links:
These maps were generated from the MCMC fit described in Gold, et.al.. The inputs are the one degree smoothed maps per frequency band, binned to Nside=64. There is an MCMC chain for each pixel which is used to estimate the likelihood for all the parameters. The maps provided for each parameter are:
Three sets of maps are provided: a "base" model, a shifted spinning dust model, and a steepening synchrotron model. Each model has a slightly different set of parameters that are allowed to vary. The following parameters are allowed to vary when performing the fit at each pixel:
Temperatures in mK are in antenna units except for the CMB maps, which are provided in thermodymanic units. The reduced χ^{2} are the bestfit χ^{2} divided by the number of degrees of freedom determined from the chain using the "effective complexity". Additional Information
