Definitions for X-ray binary
This page provides all possible meanings and translations of the word X-ray binary
A binary star system in which one star of the pair is an optically invisible X-ray source.
X-ray binaries are a class of binary stars that are luminous in X-rays. The X-rays are produced by matter falling from one component, called the donor to the other component, called the accretor, which is compact: a white dwarf, neutron star, or black hole. The infalling matter releases gravitational potential energy, up to several tenths of its rest mass, as X-rays. An estimated 1041 positrons escape per second from a typical hard low-mass X-ray binary.
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"X-ray binary." Definitions.net. STANDS4 LLC, 2014. Web. 21 Apr. 2014. <http://www.definitions.net/definition/X-ray binary>.