Abstract:
The beamed radio emission from relativistic plasma (particles or bunches),
constrained to move along the curved trajectories, occurs in the direction of velocity.
We have generalized the coherent curvature radiation model to include the
detailed geometry of the emission region in pulsar magnetorsphere, and deduced
the polarization state in terms the Stokes parameters. By considering both the
uniform and modulated emissions, we have simulated a few typical pulse profiles.
The antisymmetric type of circular polarization 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 as geometric property of the emission process.
