... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Visiting Parkes radio telescope . ... We discuss the specific requirements for significant circular polarization to arise due to generalized Faraday rotation by referring to the familiar rotation measure (RM) and defining a relativistic rotation measure (RRM) that is its counterpart due to the contribution of the highly relativistic particles...