X-ray luminosity function of low-mass X-ray binaries in galaxies

Abstract

X-ray luminosity function derived from observations of X-ray sources in galactic bulges can be explained by prinicipal evolutionary relations for mass accretion rate onto the compact object. The observed mean distribution of individual X-ray luminosities of galactic LMXB is satisfactorily described by a symmetric quasi-Lorentzian curve. The flux variance for bright sources is found to be proportional to the mean luminosity. Such a distribution does not change the slope of the power law luminosity function of the source population, which is expected from the dependence of the mass transfer rate on the mass of the Roche-lobe filling non-degenerate optical component.

arXiv comment15 pages, latex, 5 figures, to appear in Astronomy Letters

References in corpus (3)

• High Mass X-ray Binaries as a Star Formation Rate Indicator in Distant Galaxies
• Low mass X-ray binaries as a stellar mass indicator for the host galaxy
• Type Ia Supernovae: An Examination of Potential Progenitors and the Redshift Distribution

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• Probing the Low-Luminosity XLF in Normal Elliptical Galaxies
• Chandra ACIS Survey of X-ray Point Sources in Nearby Galaxies. II. X-ray Luminosity Functions and Ultraluminous X-ray Sources
• Probing the X-Ray Binary Populations of the Ring Galaxy NGC 1291
• Period--luminosity relation for persistent LMXBs in the near-infrared
• Collective Properties of X-ray Binary Populations of Galaxies. I. Luminosity and Orbital Period Distributions of High-Mass X-ray Binaries
• The Megasecond Chandra X-Ray Visionary Project Observation of NGC 3115 (III): luminosity functions of LMXBs and dependence on stellar environments
• The Luminosity Function of Low Mass X-Ray Binaries in the Globular Cluster System of NGC 1399
• Donors of Persistent Neutron-star Low-mass X-ray Binaries
• Effects of variability of X-ray binaries on the X-ray luminosity functions of Milky Way