Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975acasn..16...19f&link_type=abstract
Acta Astronomica Sinica, vol. 16, June 1975, p. 19-26. In Chinese, with abstract in English.
Astronomy and Astrophysics
Astronomy
Binary Stars, Emission Spectra, Neutron Stars, X Ray Sources, Astronomical Models, Black Holes (Astronomy), Bremsstrahlung, Pair Production, Power Spectra, X Ray Binaries
Scientific paper
The emission mechanism from X-ray sources in close binary stars is studied. It is suggested that pair production may play a major role in the X-ray emission region which is formed by the accretion of a compact object (a neutron star or a black hole). The present model qualitatively accounts for the following observed general properties in X-ray binaries: (1) the X-ray luminosity lies within the range from 10 to the 36th to 10 to the 38th erg/sec; (2) the X-ray energy spectrum can in most cases be represented either by a power law or in a thermal bremsstrahlung form; (3) the temperature of the thermal bremsstrahlung spectrum is of the order of 100 million K; and (4) the form of the energy spectrum does not change appreciably when luminosity fluctuates.
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