6th NATO-Advanced-Study-Institute on Electromagnetic Spectrum of Neutron Stars, Marmaris, Türkiye, 7 - 18 Haziran 2004, cilt.210, ss.263-277
I will review the class of accreting powered neutron stars that are in close binary systems. I will summarize the recent developments and the main properties of the neutron stars. These include the formation of X-ray spectra, formation of pulse profiles, quasi periodic oscillations, pulse frequency fluctuations, long term variations and orbital period decay of X-ray binaries.