The Galactic Bulge Survey: completion of the X-ray survey observations

Abstract

We provide the Chandra source list for the last ~quarter of the area covered by the Galactic Bulge Survey (GBS). The GBS targets two strips of 6\degr x 1\degr (12 square degrees in total), one above (1\degr<b<2\degr) and one below (-2\degr<b<-1\degr) the Galactic plane in the direction of the Galactic Center at X-ray, optical and near-infrared wavelengths. For the X-ray part of the survey we use 2 ks per Chandra pointing. We find 424 X-ray sources in the 63 Chandra observations we report on here. These sources are in addition to the 1216 X-ray sources discovered in the first part of the GBS survey described before. We discuss the characteristics and the X-ray variability of the brightest of the sources as well as the radio properties from existing radio surveys. We point out an interesting asymmetry in the number of X-ray sources as a function of their Galactic l and b coordinates which is probably caused by differences in average extinction towards the different parts of the GBS survey area.

10 pages, 5 figures, accepted for publication by ApJS. arXiv admin note: text overlap with arXiv:1103.1486

References in corpus (3)

• Populating the Galaxy with low-mass X-ray binaries
• Orbital Period and Outburst Luminosity of Transient Low Mass X-ray Binaries
• ADAFs, accretion discs and outbursts in compact binaries

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