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    A radio counterpart to a neutron star merger

    Access Status
    Fulltext not available
    Authors
    Hallinan, G.
    Corsi, A.
    Mooley, K.
    Hotokezaka, K.
    Nakar, E.
    Kasliwal, M.
    Kaplan, D.
    Frail, D.
    Myers, S.
    Murphy, T.
    De, K.
    Dobie, D.
    Allison, J.
    Bannister, K.
    Bhalerao, V.
    Chandra, P.
    Clarke, T.
    Giacintucci, S.
    Ho, A.
    Horesh, A.
    Kassim, N.
    Kulkarni, S.
    Lenc, E.
    Lockman, F.
    Lynch, Christene
    Nichols, D.
    Nissanke, S.
    Palliyaguru, N.
    Peters, W.
    Piran, T.
    Rana, J.
    Sadler, E.
    Singer, L.
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Hallinan, G. and Corsi, A. and Mooley, K. and Hotokezaka, K. and Nakar, E. and Kasliwal, M. and Kaplan, D. et al. 2017. A radio counterpart to a neutron star merger. Science. 358 (6370): pp. 1579-1583.
    Source Title
    Science
    DOI
    10.1126/science.aap9855
    ISSN
    0036-8075
    School
    Curtin Institute of Radio Astronomy (Physics)
    URI
    http://hdl.handle.net/20.500.11937/69505
    Collection
    • Curtin Research Publications
    Abstract

    Gravitational waves have been detected from a binary neutron star merger event, GW170817. The detection of electromagnetic radiation from the same source has shown that the merger occurred in the outskirts of the galaxy NGC 4993, at a distance of 40 megaparsecs from Earth. We report the detection of a counterpart radio source that appears 16 days after the event, allowing us to diagnose the energetics and environment of the merger. The observed radio emission can be explained by either a collimated ultrarelativistic jet, viewed off-axis, or a cocoon of mildly relativistic ejecta. Within 100 days of the merger, the radio light curves will enable observers to distinguish between these models, and the angular velocity and geometry of the debris will be directly measurable by very long baseline interferometry.

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