Fractional polarization of extragalactic sources in the 500 deg2 SPTpol survey
Fractional polarization of extragalactic sources in the 500 deg2 SPTpol survey
We study the polarisation properties of extragalactic sources at 95 and 150 GHz in the SPTpol 500 deg$^2$ survey. We estimate the polarised power by stacking maps at known source positions, and correct for noise bias by subtracting the mean polarised power at random positions in the maps. We show …