Measurement of the Crab nebula polarization at 90 GHz as a calibrator for CMB experiments
Measurement of the Crab nebula polarization at 90 GHz as a calibrator for CMB experiments
<i>Context. <i/>CMB experiments aiming at a precise measurement of the CMB polarization, such as the Planck satellite, need a strong polarized absolute calibrator on the sky to accurately set the detectors polarization angle and the cross-polarization leakage. As the most intense polarized source in the microwave sky at angular scales …