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Weiwei Zhu et al. 2008 ApJ 686 520 doi:10.1086/591219

The Long-Term Radiative Evolution of Anomalous X-Ray Pulsar 1E 2259+586 After Its 2002 Outburst

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Weiwei Zhu1, Victoria M. Kaspi1,2, Rim Dib1, Peter M. Woods3,4, Fotis P. Gavriil5,6 and Anne M. Archibald1

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Abstract References Cited By
We present an analysis of five XMM-Newton observations of the anomalous X-ray pulsar (AXP) 1E 2259+586 taken in 2004 and 2005 during its relaxation following its 2002 outburst. We compare these data with those of five previous XMM-Newton observations taken in 2002 and 2003, and find the observed flux decay is well described by a power law of index –0.69 ± 0.03. As of mid-2005, the source may still have been brighter than preoutburst, and was certainly hotter. We find a strong correlation between hardness and flux, as seen in other AXPs. We discuss the implications of these results for the magnetar model.

Subject headings

pulsars: individual (1E 2259+586); stars: neutron; X-rays: stars


Dates

Issue 1 (2008 October 10)

Received 2007 October 9, accepted for publication 2008 June 21



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