Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2009-05-21
Astrophys.J.710:1710-1717,2010
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
14 pages, 5 figures, Accepted for publication in the Astrophysical Journal. Incorporates changes from an anonymous referee; ad
Scientific paper
10.1088/0004-637X/710/2/1710
We report a large spin-up glitch in PSR J1846-0258 which coincided with the onset of magnetar-like behavior on 2006 May 31. We show that the pulsar experienced an unusually large glitch recovery, with a recovery fraction of Q=8.7+/- 2.5, resulting in a net decrease of the pulse frequency. Such a glitch recovery has never before been observed in a rotation-powered pulsar, however, similar but smaller glitch over-recovery has been recently reported in the magnetar AXP 4U~0142+61 and may have occurred in the SGR 1900+14. We also report a large increase in the timing noise of the source. We discuss the implications of the unusual timing behavior in PSR J1846-0258 on its status as the first identified magnetically active rotation-powered pulsar.
Gavriil Fotis P.
Kaspi Victoria M.
Livingstone Margaret A.
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