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LOFAR images of polarized emission from our Galaxy. The presence of polarized foregrounds is a serious complication for epoch of reionization (EoR) experiments. To avoid the leakage of polarized emission into total intensity, which can depend on frequency, we need to calibrate the instrumental polarization across the field of view to a small fraction of 1%. Given the rather uniform levels of the polarized intensity, the polarity of Stokes Q,U is a good indicator of the spatial variations of the plane of polarization.  ... Read more




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Design: Kuenst.    Development: Dripl.    © 2014 ASTRON