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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1412
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dc.contributor.authorRadhakrishnan, V.-
dc.contributor.authorRankin, J.M.-
dc.date.accessioned2006-07-07T06:18:19Z-
dc.date.available2006-07-07T06:18:19Z-
dc.date.issued1990-03-
dc.identifier.citationAstrophysical Journal, 1990, Vol.352, p258-266en
dc.identifier.issn0004-637X-
dc.identifier.issn1538-4357 (online)-
dc.identifier.urihttp://hdl.handle.net/2289/1412-
dc.description.abstractThe circular polarization associated with pulsar emission is examined phenomenologically. Virtually all circular polarization is observed in core components - that is, in core-single profiles and in the central components of triple and five-component profiles. Two extreme types of circular signature are identified in the observations: (1) an antisymmetric type wherein the circular polarization changes sense in midpulse, and (2) a symmetric type wherein it is predominantly of one sense. It is found that circular polarization of the antisymmetric type is strongly correlated with the sense of rotation of the linear position angle. Transitions from positive (LH) to negative (RH) are found to accompany negative (clockwise) rotations of the position angle and vice versa. The correlation requires that the antisymmetric circular polarization is also a purely geometric property of the emission process. Curvature radiation will have significant net circular polarization if there are gradients in the emissivity over angular scales comparable with the emission cone of a single charge. Furthermore, no net circular polarization is produced if the emissivity is circularly symmetric about the magnetic dipole axis.en
dc.format.extent1680985 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherThe University of Chicago Press for the American Astronomical Societyen
dc.relation.urihttp://adsabs.harvard.edu/cgi-bin/bib_query?1990ApJ...352..258Ren
dc.rights(1990) by the American Astronomical Society. Scanned images provided by the NASA ADS Data System.en
dc.subjectCircular polarizationen
dc.subjectEmission spectraen
dc.subjectPulsarsen
dc.subjectStellar radiationen
dc.subjectEmissivityen
dc.subjectPulsar magnetospheresen
dc.subjectStellar magnetic fieldsen
dc.subjectStellar rotationen
dc.titleToward an empirical theory of pulsar emission. V - On the circular polarization in pulsar radiationen
dc.typeArticleen
Appears in Collections:Research Papers (A&A)

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