A deep search for the optical counterpart to the anomalous X-ray pulsar 1E 2259+58.6

(2) California Institute of Technology); F. Hulleman (1); F.W.M. Verbunt (1); M.H. van Kerkwijk (1); S.R. Kulkarni (2) ((1) Utrecht University

arxiv: astro-ph/0002474 · v1 · submitted 2000-02-25 · 🌌 astro-ph

A deep search for the optical counterpart to the anomalous X-ray pulsar 1E 2259+58.6

F. Hulleman (1) , M.H. van Kerkwijk (1) , F.W.M. Verbunt (1) , S.R. Kulkarni (2) ((1) Utrecht University , (2) California Institute of Technology) This is my paper

classification 🌌 astro-ph

keywords x-rayanomalousbinaryimageskeckpulsaraccretionarchival

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We present Keck R and I band images of the field of the anomalous X-ray pulsar 1E 2259+58.6. We derive an improved X-ray position from archival ROSAT HRI observations by correcting for systematic (boresight) errors. Within the corresponding error circle, no object is found on the Keck images, down to limiting magnitudes R = 25.7 and I = 24.3. We discuss the constraints imposed by these limits, and conclude that it is unlikely that 1E 2259+58.6 is powered by accretion from a disk, irrespective of whether it is in a binary or not, unless the binary is extremely compact.

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A deep search for the optical counterpart to the anomalous X-ray pulsar 1E 2259+58.6

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