TY - JOUR AB - We introduce a method to isolate the contribution of parity-violating modes to the peak constrained correlation function. This method can be used as a local estimate of polarization rotation. We test this method using simulations and by applying it to Planck maps [P. A. R. Ade et al., arXiv:1502.01589 astro.ph.co]. We obtain a constraint on the monopole of the polarization rotation angle α=0.31±0.23α=0.31±0.23. AU - Contaldi,CR DO - 10.1142/S0218271816400149 PY - 2016/// SN - 0218-2718 TI - Imaging cosmic polarization rotation T2 - International Journal of Modern Physics D UR - http://dx.doi.org/10.1142/S0218271816400149 UR - http://hdl.handle.net/10044/1/42910 VL - 25 ER -