Volume 567, July 2014
|Number of page(s)||4|
|Section||Galactic structure, stellar clusters and populations|
|Published online||04 July 2014|
Population of the Galactic X-ray binaries and eRosita
Institut für Astronomie und Astrophysik,
Received: 6 March 2014
Accepted: 12 April 2014
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.
Key words: X-rays: binaries / Galaxy: structure / stars: luminosity function, mass function / surveys
© ESO, 2014
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