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WMAP

Wilkinson Microwave Anisotropy Probe

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

Product Name
Point Source Variability Table
Mission
WMAP

Description

This table lists flux densities for each year of the WMAP mission for each of the 390 sources in the five year WMAP point source catalog. For each source, the yearly flux variation with respect to the 5-year mean flux was obtained by fitting a Gaussian to the (individual year minus 5-year) difference map for each year 1-5. The position of the Gaussian is fixed to the source position in the five year catalog and the width of the Gaussian is fixed to the beam width. The only free parameters are the Gaussian peak brightness and the baselevel. The table lists yearly flux densities obtained by adding the 5-year mean flux to the yearly flux variation. The errors listed are uncertainties in the yearly flux variation from the Gaussian fitting, and do not include uncertainty in the 5-year mean flux. Thus the error values can be used with year-to-year flux differences to estimate the significance of variability. For bands in which a 5-year flux is not listed in the point source catalog, the yearly fluxes and errors in this table are set to zero.

Col 1 Source Name
Cols 2 -- 3Galactic Longitude and Latitude
Col 4 Year of WMAP Mission
Cols 5 -- 9Yearly Flux (Jy) in K-W bands
Cols 10 -- 14Uncertainty in Yearly Flux Variation (Jy)
Col 155 GHz Identification
Col 16Flag for multiple 5 GHz identifications
Col 17WMAP DR1 Identification Number

Additional Information

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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