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    Revisiting the birth locations of pulsars B1929+10, B2020+28, and B2021+51

    237322_237322.pdf (1.723Mb)
    Access Status
    Open access
    Authors
    Kirsten, Franz
    Vlemmings, W.
    Campbell, R.
    Kramer, M.
    Chatterjee, S.
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Kirsten, F. and Vlemmings, W. and Campbell, R. and Kramer, M. and Chatterjee, S. 2015. Revisiting the birth locations of pulsars B1929+10, B2020+28, and B2021+51. Astronomy and Astrophysics. 577 (A111).
    Source Title
    Astronomy and Astrophysics
    DOI
    10.1051/0004-6361/201425562
    ISSN
    0004-6361
    School
    Curtin Institute of Radio Astronomy (Physics)
    Remarks

    Reproduced with permission from Astronomy & Astrophysics, © ESO

    URI
    http://hdl.handle.net/20.500.11937/22228
    Collection
    • Curtin Research Publications
    Abstract

    We present new proper motion and parallax measurements obtained with the European VLBI Network (EVN) at 5GHz for the three isolated pulsars B1929+10, B2020+28, and B2021+51. For B1929+10 we combined our data with earlier VLBI measurements and confirm the robustness of the astrometric parameters of this pulsar. For pulsars B2020+28 and B2021+51 our observations indicate that both stars are almost a factor of two closer to the solar system than previously thought, placing them at a distance of 1.39-0.06+0.05 and 1.25-0.17+ 0.14kpc. Using our new astrometry, we simulated the orbits of all three pulsars in the Galactic potential with the aim to confirm or reject previously proposed birth locations. Our observations ultimately rule out a claimed binary origin of B1929+10 and the runaway star ζ Ophiuchi in Upper Scorpius. A putative common binary origin of B2020+28 and B2021+51 in the Cygnus Superbubble is also very unlikely.

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