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Author Dinesh Kumar ♦ Gangadhara, R. T.
Source Indian Institute of Astrophysics
Content type Text
File Format PDF
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics
Subject Keyword Polarization ♦ Pulsars: general ♦ Radiation mechanisms: non-thermal
Description We have developed a model for the polarization of curvature radiation by taking into account the polar-cap-currentinduced perturbation on the dipolar magnetic field. We present the effects of the polar cap current on the pulsar radio emission in an artificial case when the rotation effects, such as aberration and retardation, are absent. Our model indicates that the intensity components and the polarization angle inflection point can be shifted to either the leading or the trailing side depending upon the prevailing conditions in the viewing geometry, the non-uniformity in source distribution (modulation), and the polar-cap-current-induced perturbation. Also, we find evidence for the origin of symmetric-type circular polarization in addition to the antisymmetric type. Our model predicts a stronger trailing component compared to that on the leading side of a given cone under some specific conditions.
ISSN 0004637X
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Institution IOP Publishing
Starting Page 1