Volume 437, Number 2, July II 2005
|Page(s)||537 - 543|
|Section||Stellar structure and evolution|
|Published online||21 June 2005|
Radio emission by particles due to pulsar spin
Indian Institute of Astrophysics, Bangalore – 560034, India e-mail: [mathew;ganga]@iiap.res.in
Accepted: 15 February 2005
We present a relativistic model for the motion of charged particles in rotating magnetic field lines projected onto a plane perpendicular to the rotation axis. By making an approximation that the projected field lines are straight, an analytical expression is obtained for the particle trajectory. The motive behind developing this model is to elucidate some of the effects of rotation in pulsar profiles. There is significant contribution to the curvature of a particle trajectory due to the rotation of the pulsar, which is in addition to the inherent curvature of the field lines. The asymmetry in the observed pulse shapes can be explained by considering the aberration-retardation effects. The single sign circular polarization observed in many pulsars might be due to the relative orientation of sight line with respect to the particle trajectory plane.
Key words: pulsars general / radiation mechanisms: non-thermal / stars: rotation / magnetic fields / radio continuum: general
© ESO, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.