Galactic centre X-ray sources

Details Galactic centre X-ray sources Galactic centre X-ray sources

2006-11-06

arxiv.org/abs/astro-ph/0611177v1

AIPConf.Proc.924:893-896,2007

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures; Poster to appear in AIP Conf. Proc.: `The Multicoloured Landscape of Compact Objects and their Explosive O

Scientific paper

10.1063/1.2774960

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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