GX 339-4 : X-ray spectra of high and low states.
Abstract
The Ariel-6 medium energy instrument observed GX 339-4 (1658-48) in 1979 and 1981 and found the source in the high and low states respectively. The spectra in both states are best fitted by power-laws, of photon index -4.5 in the high state and -1.5 in the low state. The total X-ray output for the two states is very similar.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- February 1983
- Bibcode:
- 1983A&A...118L...3R
- Keywords:
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- Accretion Disks;
- Energy Spectra;
- Variable Stars;
- X Ray Astronomy;
- X Ray Stars;
- Ariel Satellites;
- Spaceborne Astronomy;
- Astrophysics