Modeling of polarization of radio pulsars

Abstract

We have generalized the coherent curvature radiation model to include the detailed geometry of the emission region in pulsar magnetosphere, and deduced the polarization state in terms the Stokes parameters. By considering uniform and modulated emissions, we have simulated the profiles. The model predicts that the circular polarization of antisymmetric type is an intrinsic property of curvature radiation, and it survives only when there is modulation or discrete distribution in the emitting sources. Our model predicts a correlation between the polarization angle swing and sign reversal of circular polarization.