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On the X-ray variability of magnetar 1RXS J170849.0-400910

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arxiv 1401.5000 v1 pith:QDRA6GLE submitted 2014-01-20 astro-ph.HE

On the X-ray variability of magnetar 1RXS J170849.0-400910

P. Scholz , R. F. Archibald , V. M. Kaspi , C.-Y. Ng , A. P. Beardmore , N. Gehrels , J. A. Kennea This is my paper
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keywords j170849x-rayglitchesvariationsanalysisevidencefluxobservations
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We present a long-term X-ray flux and spectral analysis for 1RXS J170849.0-400910 using Swift/XRT spanning over 8 years from 2005-2013. We also analyze two observations from Chandra and XMM in the period from 2003-2004. In this 10-yr period, 1RXS J170849.0-400910 displayed several rotational glitches. Previous studies have claimed variations in the X-ray emission associated with some of the glitches. From our analysis we find no evidence for significant X-ray flux variations and evidence for only low-level spectral variations. We also present an updated timing solution for 1RXS J170849.0-400910, from RXTE and Swift observations, which includes a previously unreported glitch at MJD 56019. We discuss the frequency and implications of radiatively quiet glitches in magnetars.

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