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SUMMARY:WMAP polarization observations: seeing through the Galaxy - Jo Dun
 kley (Oxford)
DTSTART:20090209T130000Z
DTEND:20090209T140000Z
UID:TALK15881@talks.cam.ac.uk
CONTACT:Antony Lewis
DESCRIPTION:Current polarization measurements from WMAP provide informatio
 n about the reionization epoch. However\, WMAP observes significant levels
  of polarized radiation from our Galaxy. I will present a sampling method 
 for estimating the polarized CMB maps\, marginalizing over Galactic contri
 butions. I will show the application of this method to the five year WMAP 
 data\, where we find that the large scale polarized CMB signal is consiste
 nt with the standard 'template-cleaned' result. The synchrotron emission i
 s found to have mean index ~ -3.0 in regions of high signal to noise. The 
 large scale polarized CMB is also used to search for a background of gravi
 tational waves from inflation in the early universe\, so I'll discuss the 
 application to future estimation of this primordial signal.\n\n
LOCATION:Potter Room\,  CMS\, Pav.B\, First Floor Common Room (B1.19)
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