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Polarization Properties of Nine Southern Radio Pulsars | | F. Crawford
; R. N. Manchester
; V. M. Kaspi
; | | Date: |
28 Jun 2001 | | Subject: | astro-ph | | Affiliation: | MIT), R. N. Manchester (ATNF), V. M. Kaspi (MIT, McGill | | Abstract: | We report on radio polarimetry observations for nine southern pulsars. Six of the nine in the sample are young, with characteristic ages under 100 kyr and high spin-down luminosities. All six show a significant degree of linear polarization. We also confirm a previously noticed trend in which the degree of linear polarization increases with spin-down luminosity. Where possible we have used the rotating-vector model of the pulsar emission geometry to fit the observed position angle data. Our fit for PSR J1513-5908 (B1509-58) in particular is useful for directly testing the magnetospheric model of Melatos (1997) in combination with further timing observations. For this pulsar we find that a magnetic inclination angle greater than or equal to 60 degrees is excluded at the 3-sigma level, and that the geometry suggested by the morphology of an apparent bipolar X-ray outflow is marginally inconsistent with the Melatos model. We also report on polarimetry of three older pulsars: PSR J0045-7319, PSR J1627-4845, and PSR J1316-6232 (whose discovery we also report). Of these, only PSR J0045-7319 shows significant polarization. | | Source: | arXiv, astro-ph/0106544 | | Services: | Forum | Review | PDF | Favorites | |
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