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arXiv · astro-ph/0611177

Galactic centre X-ray sources

Andrew J. Gosling·Reba M. Bandyopadhyay·Katherine M. Blundell
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Abstract

We report on a campaign to identify the counterparts to the population of X-ray sources discovered at the centre of our Galaxy by Wang et al.(2002) using Chandra. We have used deep, near infrared images obtained on VLT/ISAAC to identify candidate counterparts as astrometric matches to the X-ray positions. Follow up Ks-band spectroscopic observations of the candidate counterparts are used to search for accretions signatures in the spectrum, namely the Brackett-Gamma emission line (Bandyopadhyay et al.1997). From our small initial sample, it appears that only a small percentage, ~2-3% of the ~1000 X-ray sources are high mass X-ray binaries or wind accreting neutron stars, and that the vast majority will be shown to be canonical low mass X-ray binaries and cataclysmic variables.

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Andrew J. Gosling, Reba M. Bandyopadhyay, Katherine M. Blundell. 2006-11-06. Galactic centre X-ray sources. https://doi.org/10.1063/1.2774960

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