X-Ray and Infrared Enhancement of Anomalous X-ray Pulsar 1E 2259+58

Details X-Ray and Infrared Enhancement of Anomalous X-ray Pulsar 1E 2259+58 X-Ray and Infrared Enhancement of Anomalous X-ray Pulsar 1E 2259+58

2005-11-29

arxiv.org/abs/astro-ph/0511783v1

Astronomy and Astrophysics

Astrophysics

17 pages, 3 figures, accepted for publication in ApJ

Scientific paper

10.1086/500097

The long term (~1.5 years) X-ray enhancement and the accompanying infrared enhancement light curves of the anomalous X-ray pulsar 1E 2259+58 following the major bursting epoch can be accounted for by the relaxation of a fall back disk that has been pushed back by a gamma-ray flare. The required burst energy estimated from the results of our model fits is low enough for such a burst to have remained below the detection limits. We find that an irradiated disk model with a low irradiation efficiency is in good agreement with both X-ray and infrared data. Non-irradiated disk models also give a good fit to the X-ray light curve, but are not consistent with the infrared data for the first week of the enhancement.

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