May 23, 2007 First season QUaD CMB temperature and polarization power spectra by Clem Pryke
First season QUaD CMB temperature and polarization power spectra
KICP scientists and collaborators recently released first results from the QUaD experiment. QUaD is a specialized telescope which is measuring the polarization of the CMB from the South Pole. The polarization of the CMB is currently a hot topic in cosmology research - the very successful LCDM cosmological model makes specific predictions for what we should see, but building telescope with the needed sensitivity is extremely challenging. QUaD is currently breaking new ground in this field.
Preliminary QUaD first season results derived as cross power spectra between the 100 and 150 GHz maps. The two sets of points are the results from two completely independent analyzes of the data (see text for details) and are displaced by ±10 in multipole number from their nominal values for clarity.