The Optical and Near-Infrared Counterpart of GRS 1758-258
Abstract
GRS 1758-258 is one of the two brightest persistent hard X-ray sources in the Galactic Center region, of which an optical/near infrared counterpart has not been unambiguously identified in previous work, mainly due to high absorption and the lack of suitable astrometric stars in early times. In this work, we take advantage of modern star catalogs to reanalyze archival images of the field in the optical and near infrared wavelengths, and compute a new astrometric solution. As a result, a single source is consistent with radio and X-ray sub-arcsec positions, which we propose as the counterpart of GRS 1758-258.
- Publication:
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International Journal of Modern Physics D
- Pub Date:
- 2010
- DOI:
- 10.1142/S0218271810016725
- Bibcode:
- 2010IJMPD..19..757M
- Keywords:
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- X-ray binaries;
- infrared;
- radio continuum