Spectral studies of low-mass X-ray binaries observed by EXOSAT
Abstract
The X-ray emission of low-mass X-ray binary bursters MXB1702-43, MXB1728-34, flaring source GX17+2, and bright bulge sources 4U1705-44 and 4U1755-338, which show evidence of orbital periods was studied. In MXB1728-34 an X-ray burst was observed. The burst analysis indicates that the maximum burst flux is close to Eddington limit, and the black body radius remains constant (8.5 + or - 0,7 km, for 5kpc distance) during the decay part of the burst. There is an indication for a 4.1 keV absorption feature during burst maximum. The persistent emission can be described by a simple exponential spectrum (kT=5.6keV) with a broad emission line feature superimposed around 6keV.
- Publication:
-
Contributions of the X-Ray Astronomy Group
- Pub Date:
- November 1984
- Bibcode:
- 1984xras.rept...31S
- Keywords:
-
- Binary Stars;
- Stellar Spectra;
- X Ray Binaries;
- X Ray Sources;
- X Ray Spectra;
- Black Body Radiation;
- Bursts;
- Exosat Satellite;
- Luminous Intensity;
- Spectrum Analysis;
- Astronomy