The discovery of two mildly-recycled binary pulsars in the Northern High Time Resolution Universe pulsar survey

M. Berezina, D.J. Champion, P. C. C. Freire, T M Tauris, Michael Kramer, Andrew Lyne, Benjamin Stappers, L. Guillemot, I. Cognard, E D Barr, R. P. Eatough, R. Karuppusamy, L G Spitler, G Desvignes

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    Abstract

    We report the discovery and the results of follow-up timing observations of PSR J2045+3633 and PSR J2053+4650, two binary pulsars found in the Northern High Time Resolution Universe pulsar survey being carried out with the Effelsberg radio telescope. Having spin periods of 31.7 ms and 12.6 ms respectively, and both with massive white dwarf companions, Mc > 0.8 M⊙, the pulsars can be classified as mildly recycled. PSR J2045+3633 is remarkable due to its orbital period (32.3 days) and eccentricity e = 0.01721244(5) which is among the largest ever measured for this class. After almost two years of timing the large eccentricity has allowed the measurement of the rate of advance of periastron at the 5-σ level, 0.0010(2)
    Original languageEnglish
    Article numberstx1518
    JournalMonthly Notices of the Royal Astronomical Society
    DOIs
    Publication statusPublished - 21 Jun 2017

    Keywords

    • pulsars: general
    • pulsars; binaries
    • pulsars: individual (PSR 2045+3633)
    • pulsars: individual (PSR 2053+4650)

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