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

Abstract

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.

9 pages, 2 figures, accepted for publication in ApJ

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Cited by in corpus (11)

• Magnetars
• Systematic study of magnetar outbursts
• 16 Years of RXTE Monitoring of Five Anomalous X-ray Pulsars
• A Magnetar-like Outburst from a High-B Radio Pulsar
• The long-term post-outburst spin down and flux relaxation of magnetar Swift J1822.3$-$1606
• On the braking index of the unusual high-B rotation-powered pulsar PSR J1846-0258
• Two new outbursts and transient hard X-rays from 1E 1048.1$-$5937
• Swift observations of two outbursts from the magnetar 4U 0142+61
• The 2016 outburst of PSR J1119-6127: cooling & a spin-down dominated glitch
• Fitting XMM-Newton Observations of the AXP 1RXS J170849.0-400910 with four magnetar surface emission models, and predictions for X-ray polarization observations with IXPE
• An Elaborate Search for Coherent Pulsations from Intermittent-AMXPs