Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Beam Maps and Window Functions

Cosmology and other scientific results from the WMAP mission require an accurate knowledge of the beam patterns in flight. While the degree of beam knowledge for the WMAP one-year and three-year results was unprecedented for a CMB experiment, we have significantly improved the beam determination as part of the five-year data release. Physical optics fits are done on both the WMAP is the result of a partnership between Princeton University and NASA’s Goddard Space Flight Center. Scientific guidance is provided by the WMAP Science Team. Adnet Systems, Inc., 7515 Mission Dr., Suite A100, Lanham, Maryland 20706 Code 665, NASA/Goddard Space Flight Center, Greenbelt, MD 20771 Dept. of Physics & Astronomy, The Johns Hopkins University, 3400 N. Charles St., Baltimore, MD 21218-2686 Dept. of Physics and Astronomy, University of British Columbia, Vancouver, BC Canada V6T 1Z1 Dept. of Physics, Jadwin Hall, Princeton University, Princeton, NJ 08544-0708 Dept. of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ 08544-1001 Astrophysics, University of Oxford, Keble Road, Oxford, OX1 3RH, UK Columbia Astrophysics Laboratory, 550 W. 120th St., Mail Code 5247, New York, NY 10027-6902 Canadian Institute for Theoretical Astrophysics, 60 St. George St, University of Toronto, Toronto, ON Canada M5S 3H8 Princeton Center for Theoretical Physics, Princeton University, Princeton, NJ 08544 Dept. of Physics, Brown University, 182 Hope St., Providence, RI 02912-1843 UCLA Physics & Astronomy, PO Box 951547, Los Angeles, CA 90095-1547