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

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Abstract

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 γ-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.

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Authors and Affiliations

  1. Institut für Astronomie und Astrophysik, Berlin

    M. Pakull & K. Beuermann

  2. Astronomisches Institut, Tübingen

    H. Brunner & A. Staubert

  3. Max-Planck-Institut für Extraterrestrische Physik, Garching

    W. Pietsch & K. Beuermann

  4. Space Science Department of ESA, ESTEC, Noordwijk

    M. van der Klis

  5. Service d'Astrophysique, Gif-sur-Yvette

    J. M. Bonnet-Bidaud

Authors
  1. M. Pakull
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  2. H. Brunner
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  3. W. Pietsch
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  4. A. Staubert
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  5. K. Beuermann
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  6. M. van der Klis
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  7. J. M. Bonnet-Bidaud
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Pakull, M., Brunner, H., Pietsch, W. et al. LMC X-4, AO538-66 and surrounding X-ray sources observed with EXOSAT. Space Sci Rev 40, 379–382 (1985). https://doi.org/10.1007/BF00179844

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  • DOI: https://doi.org/10.1007/BF00179844

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