Journal
ASTROPHYSICAL JOURNAL
Volume 686, Issue 1, Pages 520-527Publisher
IOP PUBLISHING LTD
DOI: 10.1086/591219
Keywords
pulsars : individual (1E 2259+586); stars : neutron; X-rays : stars
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Funding
- NSERC Discovery grant Rgpin [228738-03]
- R. Howard Webster Fellowship
- Canadian Institute for Advanced Research
- Les Fonds de la Recherche sur la Nature et les Technologies
- Canada Research Chair
- Lorne Trottier Chair in Astrophysics and Cosmology
- NSERC PGSD scholarship
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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.
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