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A deep search for the optical counterpart to the anomalous X-ray pulsar 1E 2259+58.6 | F. Hulleman
; M.H. van Kerkwijk
; F.W.M. Verbunt
; S.R. Kulkarni
; | Date: |
25 Feb 2000 | Journal: | Astron. Astroph., 358, 605 (2000) | Subject: | astro-ph | Affiliation: | Utrecht University, California Institute of Technology | Abstract: | 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. | Source: | arXiv, astro-ph/0002474 | Services: | Forum | Review | PDF | Favorites |
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