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    Transformation of a star into a planet in a millisecond pulsar binary

    Access Status
    Fulltext not available
    Authors
    Bailes, M.
    Bates, S.
    Bhalerao, V.
    Bhat, Ramesh
    Burgay, M.
    Burke-Spolaor, S.
    D'Amico, N.
    Johnston, S.
    Keith, M.
    Kramer, M.
    Kulkarni, S.
    Levin, L.
    Lyne, A.
    Milia, S.
    Possenti, A.
    Spitler, L.
    Stappers, B.
    Van Straten, W.
    Date
    2011
    Collection
    • Curtin Research Publications
    Type
    Journal Article
    Metadata
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    Abstract

    Millisecond pulsars are thought to be neutron stars that have been spun-up by accretion of matter from a binary companion. Although most are in binary systems, some 30% are solitary, and their origin is therefore mysterious. PSR J1719-1438, a 5.7-millisecond pulsar, was detected in a recent survey with the Parkes 64-meter radio telescope. We show that this pulsar is in a binary system with an orbital period of 2.2 hours. The mass of its companion is near that of Jupiter, but its minimum density of 23 grams per cubic centimeter suggests that it may be an ultralow-mass carbon white dwarf. This system may thus have once been an ultracompact low-mass x-ray binary, where the companion narrowly avoided complete destruction.

    Citation
    Bailes, M. and Bates, S. and Bhalerao, V. and Bhat, R. and Burgay, M. and Burke-Spolaor, S. and D'Amico, N. et al. 2011. Transformation of a star into a planet in a millisecond pulsar binary. Science. 333 (6050): pp. 1717-1720.
    Source Title
    Science
    URI
    http://hdl.handle.net/20.500.11937/55606
    DOI
    10.1126/science.1208890
    Department
    Curtin Institute of Radio Astronomy (Physics)

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