Transient phenomena in anomalous X-ray pulsars

G. L. Israel, F. Bernardini, M. Burgay, N. Rea, A. Possenti, S. Dall'Osso, L. Stella

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    In 2003 a previously unpulsed Einstein and ROSAT source cataloged as soft and dim (LX of few ×1033ergs-1) thermal emitting object, namely XTE J1810-197, was identified as the first unambiguous transient Anomalous X-ray Pulsar. Two years later this source was also found to be a bright highly polarized transient radio pulsar, a unique property among both AXPs and radio pulsars. In September 2006 Swift Burst Alert Telescope (BAT) detected an intense burst from the candidate AXP CXOU J164710.2-455216, which entered in an outburst state reaching a peak emission of at least a factor of 300 higher than quiescence. Here, we briefly outline the recent results concerning the outburst phenomena observed in these two AXPs. In particular, XTE J1810-197 has probed to be a unique laboratory to monitor the timing and spectral properties of a cooling/fading AXP, while new important information have been inferred from X-ray and radio band simultaneous observations. CXOU J164710.2-455216 has been monitored in X-rays and radio bands since the very beginning of its outbursting state allowing us to cover the first phases of the outburst and to study the timing and spectral behavior during the first months.

    Original languageEnglish (US)
    Title of host publication40 Years Of Pulsars
    Subtitle of host publicationMillisecond Pulsars, Magnetars and More
    Number of pages5
    StatePublished - 2008
    Event40 Years Of Pulsars: Millisecond Pulsars, Magnetars and More - Montreal, QC, Canada
    Duration: Aug 12 2007Aug 17 2007

    Publication series

    NameAIP Conference Proceedings
    ISSN (Print)0094-243X
    ISSN (Electronic)1551-7616


    Other40 Years Of Pulsars: Millisecond Pulsars, Magnetars and More
    CityMontreal, QC


    • Magnetars
    • Pulsars
    • Variability
    • X-rays

    ASJC Scopus subject areas

    • General Physics and Astronomy


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