General Relativistic Modification of a Pulsar Electromagnetic Field
  We consider an exterior electromagnetic field surrounding a rotating star endowed with a dipole magnetic field in the context of general relativity.   The analytic solution for a stationary configuration is obtained, and the general relativistic modifications and the implications for pulsar radiation are investigated in detail. We find that the general relativistic corrections of both the electric field strength and the curvature radii of magnetic field lines tend to enhance the curvature radiation photon energy. 
Kohkichi Konno, Yasufumi Kojima