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    PKS 1018–42: A Powerful, Kinetically Dominated Quasar

    Access Status
    Open access via publisher
    Authors
    Punsly, B.
    Tingay, Steven
    Date
    2006
    Type
    Journal Article
    
    Metadata
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    Citation
    Punsly, B. and Tingay, S. 2006. PKS 1018–42: A Powerful, Kinetically Dominated Quasar. The Astrophysical Journal. 640 (1): pp. L21-L24.
    Source Title
    The Astrophysical Journal
    DOI
    10.1086/503277
    ISSN
    0004637X
    URI
    http://hdl.handle.net/20.500.11937/37327
    Collection
    • Curtin Research Publications
    Abstract

    We have identified PKS 1018-42 as a radio galaxy with extraordinarily powerful jets, over twice as powerful as any 3CR source of equal or lesser redshift except one (3C 196). It is perhaps the most intrinsically powerful extragalactic radio source in the still poorly explored southern hemisphere. PKS 1018-42 belongs to the class of FR II objects that are kinetically dominated; the jet kinetic luminosity, Q ~ 6.5 × 1046 ergs s-1 (calculated at 151 MHz), is 3.4 times larger than the total thermal luminosity (IR to X-ray) of the accretion flow, Lbol ~ 1.9 × 1046 ergs s-1. It is the fourth most kinetically dominated quasar that we could verify from existing radio data. From a review of the literature, we find that kinetically dominated quasars such as PKS 1018-42 are rare, and we list the five most kinetically dominated sources found from our review. Our results for PKS 1018-42 are based on new observations from the Australia Telescope Compact Array.

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