Abstract
PRECISE (20–25″) positions of six X-ray sources located in the galactic bulge, GX1+4, GX9+9, GX3+1, GX+1, G%13+1 and GX17+2 are reported here. The data were taken as part of the survey of the galactic plane performed with the SAS-3 rotating modulation collimators1–4. Previously proposed optical counterparts for three of these sources (GX1+4, GX9+9, and GX17+2) lie within our error circles. The positions, error radii, and intensities (2–11 keV) determined for the sources are given in Table 1. We compare our results with those determined with previous sounding rocket and satellite experiments in Fig. 1. Proposed optical and radio candidates are also included. Finding charts for the six sources are given in Fig. 2.
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DOXSEY, R., APPARAO, K., BRADT, H. et al. Positions of galactic X-ray sources: 0° < lII < 20°. Nature 270, 586–588 (1977). https://doi.org/10.1038/270586a0
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DOI: https://doi.org/10.1038/270586a0
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