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LMC X-4, AO538-66 and surrounding X-ray sources observed with EXOSAT

✍ Scribed by M. Pakull; H. Brunner; W. Pietsch; A. Staubert; K. Beuermann; M. Klis; J. M. Bonnet-Bidaud

Publisher
Springer Netherlands
Year
1985
Tongue
English
Weight
194 KB
Volume
40
Category
Article
ISSN
0038-6308

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✦ Synopsis

Repeated observations of LMC X-4 with EXOSAT were carried out in 1983/84 in order to study its 30.5 day cycle and to cover the expected outbursts of the recurrent LMC transient A0538-66. The latter source was inactive during our campaign although a variable circumstellar envelope was still present around the optical counterpart.

At least ten further X-ray sources are detected in the CMA field of view around LMC X-4 including the SNR N49 which is the possible site for the March 5, 1979 T-ray burster and N63A which appears to be variable in X-ray luminosity. We furthermore discuss the strongest sources that were not present in a previous EINSTEIN survey of the LMC.

πŸ“œ SIMILAR VOLUMES

LMC X-4: 13.5 s pulsations and an X-ray
LMC X-4: 13.5 s pulsations and an X-ray flare observed by EXOSAT
✍ W. Pietsch; M. Pakull; W. Voges; R. Staubert πŸ“‚ Article πŸ“… 1985 πŸ› Springer Netherlands 🌐 English βš– 340 KB

EXOSAT observed LMC X-4 on November 17/19, 1983 for one 1.4 day binary period during the high state of the 30.5 day cycle. An eclipse with sharp ingress and slow egress was detected with an eclipse angle of 27.1+1.0 dgr. In the medium energy experiment the source showed 'a hard power law spectrum. O