Abstract
PREVIOUS attempts to identify the X-ray source GX5-1 have been unsuccessful. An optical search of the 1.2 arc min MIT error circle1 down to 17 mag yielded no clear candidate2, and in radio observations at 4.6 and 11.1 cm no point source was detected down to a limit of 0.1 and 0.005 f.u., respectively3,4. Although Milne and Dickel5 claimed that GX5-1 might be associated with the supernova remnant Milne 56, Ilovaisky and Ryter6 argue that an identification with such an extended radio source is unlikely. We report here the observation of a weak point source at the X-ray position.
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Kunkel, W., Osmer, P., Smith, M., Hoag, A., Schroeder, D., Hiltner, W. A., Bradt, H., Rappaport, S., and Schnopper, H. W., Astrophys. J. Lett., 161, L169 (1970).
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BRAES, L., MILEY, G. & Schoenmaker, A. Possible Identification of GX5-1. Nature 236, 392 (1972). https://doi.org/10.1038/236392a0
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DOI: https://doi.org/10.1038/236392a0
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