Luminosity-related changes of the energy spectrum of X 1608-522.
Abstract
The low-mass binary X-ray source X1608-522 was observed from Tenma over a wide range of luminosity. The spectrum showed a large and gradual change from a thermal type at high luminosities to a power-law type as the luminosity went down. This demonstrates that the spectral shape depends on the accretion rate and does not represent distinct characteristics of the individual sources. A two-component model spectrum consisting of a Comptonized black-body component and another softer component (expected for an optically thick accretion disk) can explain all the observed spectra consistently.
- Publication:
-
Publications of the Astronomical Society of Japan
- Pub Date:
- 1989
- Bibcode:
- 1989PASJ...41...97M
- Keywords:
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- Emission Spectra;
- Energy Spectra;
- Neutron Stars;
- X Ray Binaries;
- X Ray Sources;
- X Ray Spectra;
- Bolometers;
- Bremsstrahlung;
- Compton Effect;
- Degrees Of Freedom;
- Astrophysics