Journal
ASTRONOMY & ASTROPHYSICS
Volume 567, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201423766
Keywords
X-rays: binaries; Galaxy: structure; stars: luminosity function, mass function; surveys
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Funding
- Deutsches Zentrums fur Luft- und Raumfahrt (DLR)
- Deutsche Forschungsgemeinschaft (DFG) [DLR 50 OR 0702, FKZ 50 OG 1301, SA2131/1-1]
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The population of the Galactic X-ray binaries has been mostly probed with moderately sensitive hard X-ray surveys so far. The eRosita mission will provide for the first time a sensitive all sky X-ray survey in the 2-10 keV energy range, where the X-ray binaries emit most of the flux and discover the still unobserved low luminosity population of these objects. In this paper, we briefly review the current constraints for the X-ray luminosity functions of high- and low-mass X-ray binaries and present our own analysis based the INTEGRAL 9-year Galactic survey, which yields improved constraints. Based on these results, we estimate the number of new XRBs to be detected in the eRosita all sky survey.
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