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    Searching for pulsars associated with the Fermi GeV excess

    74241.pdf (408.4Kb)
    Access Status
    Open access
    Authors
    Bhakta, D.
    Deneva, J.
    Frail, D.
    de Gasperin, F.
    Intema, Hubertus
    Jagannathan, P.
    Mooley, K.
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Bhakta, D. and Deneva, J. and Frail, D. and de Gasperin, F. and Intema, H. and Jagannathan, P. and Mooley, K. 2017. Searching for pulsars associated with the Fermi GeV excess. Monthly Notices of the Royal Astronomical Society. 468 (3): pp. 2526-2531.
    Source Title
    Monthly Notices of the Royal Astronomical Society
    DOI
    10.1093/mnras/stx656
    ISSN
    0035-8711
    Remarks

    This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

    URI
    http://hdl.handle.net/20.500.11937/73956
    Collection
    • Curtin Research Publications
    Abstract

    The Fermi Large Area Telescope has detected an extended region of GeV emission towards the Galactic Centre that is currently thought to be powered by dark matter annihilation or a population of young and/or millisecond pulsars. In a test of the pulsar hypothesis, we have carried out an initial search of a 20 deg2 area centred on the peak of the galactic centre GeV excess. Candidate pulsars were identified as a compact, steep spectrum continuum radio source on interferometric images and followed with targeted single-dish pulsation searches. We report the discovery of the recycled pulsar PSR 1751−2737 with a spin period of 2.23 ms. PSR 1751−2737 appears to be an isolated recycled pulsar located within the disc of our Galaxy, and it is not part of the putative bulge population of pulsars that are thought to be responsible for the excess GeV emission. However, our initial success in this small pilot survey suggests that this hybrid method (i.e. wide-field interferometric imaging followed up with single-dish pulsation searches) may be an efficient alternative strategy for testing whether a putative bulge population of pulsars is responsible for the GeV excess.

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