  The magnetosphere of, and electromagnetic (EM) radiation from pulsars are
usually described in the framework of classical electrodynamics. For some
pulsars, however, whose emission heights are relatively close to the surface of
the neutron star, general relativistic effects might modify the emission from
the pulsar. We consider a magnetic dipole model of a pulsar to investigate
general relativistic effects on EM radiation from it. Our study includes
general relativistic modifications applicable to some significant issues in
pulsar astronomy, such as the magnetosphere structure and pulse profiles. We
implement computation of the magnetic field in the pulsar magnetosphere from a
solution to Maxwell's equations defined in the strongly curved spacetime around
a pulsar and find that the field exhibits a strong gravitational effect. The
effect modifies curvature radiation of a pulsar, which then leads to
modifications of the pulse profiles of radio emission. We take the pulsar PSR
J1828-1101 as an example and work out Stokes parameters to simulate the pulse
profiles for its main and interpulse emissions theoretically, which exhibit the
gravitational effects clearly; however, their testability is beyond the current
detection capabilities, with the absolute magnitude of the pulse profiles not
being precisely predictable.
