Low-radio-frequency eclipses of the redback pulsar J2215+5135 observed in the image plane with LOFAR

J W Broderick, R. P. Fender, Rene Breton, A. J. Stewart, A. Rowlinson, J. D. Swinbank, J. W T Hessels, T. D. Staley, A. J. van der Horst, M. E. Bell, D. Carbone, Y. Cendes, S. Corbel, J. Eislöffel, H. Falcke, J. M. Grießmeier, T. E. Hassall, P. Jonker, M. Kramer, M. KuniyoshiC. J. Law, S. Markoff, G. J. Molenaar, M. Pietka, L. H A Scheers, M. Serylak, Benjamin Stappers, S. ter Veen, J. van Leeuwen, R. A M J Wijers, R. Wijnands, M. W. Wise, P. Zarka

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    Abstract

    The eclipses of certain types of binary millisecond pulsars (i.e. 'black widows' and 'redbacks') are often studied using high-time-resolution, 'beamformed' radio observations. However, they may also be detected in images generated from interferometric data. As part of a larger imaging project to characterize the variable and transient sky at radio frequencies -0.4), such that the pulsar is eclipsed for longer at lower frequencies, in broad agreement with beamformed studies of other similar sources. Furthermore, the detection of the eclipses in imaging data suggests an eclipsing medium that absorbs the pulsed emission, rather than scattering it. Our study is also a demonstration of the prospects of finding pulsars in wide-field imaging surveys with the current generation of low-frequency radio telescopes.

    Original languageEnglish
    Pages (from-to)2681-2689
    Number of pages9
    JournalMonthly Notices of the Royal Astronomical Society
    Volume459
    Issue number3
    Early online date8 Apr 2016
    DOIs
    Publication statusPublished - 1 Jul 2016

    Keywords

    • Binaries: eclipsing
    • Pulsars: general
    • Pulsars: individual: PSR J2215+5135
    • Radio continuum: stars

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