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    Polarization observations of 20 millisecond pulsars

    183043_52020_Yanetal2011.pdf (1.364Mb)
    Access Status
    Open access
    Authors
    Yan, W.
    Manchester, R.
    Straten, W.
    Reynolds, J.
    Hobbs, G.
    Wang, N.
    Bailes, M.
    Bhat, N.
    Burke-Spolaor, S.
    Champion, D.
    Coles, W.
    Hotan, Aidan
    Khoo, J.
    Oslowski, S.
    Sarkissian, J.
    Verbiest, J.
    Yardley, D.
    Date
    2011
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Yan, W.M. and Manchester, R.N. and van Straten, W. and Reynolds, J.E. and Hobbs, G. and Wang, N. and Bailes, M. and Bhat, N.D.R. and Burke-Spolaor, S. and Champion, D.J. and Coles, W.A. and Hotan, A.W. and Khoo, J. and Oslowski, S. and Sarkissian, J.M. and Verbiest, J.P.W. and Yardley, D.R.B. 2011. Polarization observations of 20 millisecond pulsars. Monthly Notices of the Royal Astronomical Society. 414: pp. 2087-2100.
    Source Title
    Monthly Notices of the Royal Astronomical Society
    DOI
    10.1111/j.1365-2966.2011.18522.x
    ISSN
    1365-2966
    School
    Curtin Institute of Radio Astronomy
    Remarks

    The definitive version is available at www.blackwell-synergy.com

    URI
    http://hdl.handle.net/20.500.11937/24751
    Collection
    • Curtin Research Publications
    Abstract

    Polarization profiles are presented for 20 millisecond pulsars that are being observed as part of the Parkes Pulsar Timing Array project. The observations used the Parkes multibeam receiver with a central frequency of 1369 MHz and the Parkes digital filter bank pulsar signal-processing system PDFB2. Because of the large total observing time, the summed polarization profiles have very high signal-to-noise ratios and show many previously undetected profile features. 13 of the 20 pulsars show emission over more than half of the pulse period. Polarization variations across the profiles are complex, and the observed position angle variations are generally not in accord with the rotating vector model for pulsar polarization. Nevertheless, the polarization properties are broadly similar to those of normal (non-millisecond) pulsars, suggesting that the basic radio emission mechanism is the same in both classes of pulsar. The results support the idea that radio emission from millisecond pulsars originates high in the pulsar magnetosphere, probably close to the emission regions for high-energy X-ray and gamma-ray emission. Rotation measures were obtained for all 20 pulsars, eight of which had no previously published measurements.

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