Bicolored photometry and spectral accommodation in X-ray region of mass impregnated stellar X-ray binaries

Astronomy and Astrophysics – Astrophysics

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Energy Spectra, Exosat Satellite, Galactic Bulge, Photometry, Stellar Spectra, X Ray Binaries, Accretion Disks, Data Reduction, X Ray Sources

Scientific paper

From June 1983 to April 1986 onwards, a great number of light galactic X-ray sources were observed several times at long intervals at the EXOSAT European X-ray Observatory. Among the lightest of these sources , the so called mass-impregnated X-ray binaries (LMXBs) are found. LMXBs are semi-separated contact systems composed of a neutron star and of a mass-impregnated satellite star. The neutron star receives substance from its satellite star, thus developing an accretion disk. The liberated gravitational energy is observed at collision on the neutron star surface under the form of X-ray radiation. Among the most well known subjects of this system are Sco X-1, Cyg X-2 and the light sources of the galactic bulge. They are the lightest extrasolar X-ray sources. A model of energy spectrum is used for the examination of a number of LMXB, with these radiation characteristics. Their most important physical properties are considered. The EXOSAT X-ray satellite and the MEAR-experiments are described. The methods of data reduction and the observation catalog are presented.

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