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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1042
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dc.contributor.authorRamkumar, P.S.-
dc.contributor.authorDeshpande, A.A.-
dc.date.accessioned2006-01-02T09:19:19Z-
dc.date.available2006-01-02T09:19:19Z-
dc.date.issued1999-
dc.identifier.citationJournal of Astrophysics and Astronomy, 1999, Vol. 20, p37-50.en
dc.identifier.issn0250-6335-
dc.identifier.urihttp://hdl.handle.net/2289/1042-
dc.description.abstractMost of the known pulsars are sources of highly linearly polarized radiation. Faraday rotation in the intervening medium rotates the plane of the linear polarization as the signals propagate through the medium. The Rotation Measure (RM), which quantifies the amount of such rotation as a function of wavelength, is useful in studying the properties of the medium and in recovering the intrinsic polarization characteristics of the pulsar signal. Conventional methods for polarization measurements use telescopes equipped with dual orthogonally polarized feeds that allow estimation of all 4 Stokes parameters. Some telescopes (such as the Ooty Radio Telescope) that offer high sensitivity for pulsar observations may however be receptive to only a single linear polarization. In such a case, the apparent spectral intensity modulation, resulting from differential Faraday rotation of the linearly polarized signal component within the observing bandwidth, can be exploited to estimate the RM as well as to study the linear polarization properties of the source. In this paper, we present two improved procedures by which these observables can be estimated reliably from the intensity modulation over large bandwidths, particularly at low radio frequencies. We also highlight some other applications where such measurements and procedures would be useful.en
dc.format.extent1133850 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherIndian Academy of Sciences, Bangalore, India.en
dc.rightsIndian Academy of Sciences, Bangalore, India.en
dc.subjectStars: neutron-pulsaren
dc.subjectInterstellar medium: Faraday rotationen
dc.subjectTelescope: polarizationen
dc.titleDetermination of linear polarization and Faraday rotation of pulsar signalsen
dc.typeArticleen
Appears in Collections:Research Papers (A&A)

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