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Observations of Cygnus X-3 by Uhuru

Nature Physical Science volume 239, pages 123–125 (1972)Cite this article

Abstract

ON September 2 we were informed by R. M. Hjellming that some time during the previous few days the radio source within the positional uncertainty of Cyg X-3 had brightened in intensity by an unprecedented 3 orders of magnitude. Fortunately, the X-ray satellite, Uhuru, had been scanning the galactic plane (the source region is at b11≍1°) since August 19. We maintained that orientation until September 9 when we reoriented the satellite to view the pulsing X-ray source, Hercules X-1.

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Authors and Affiliations

  1. American Science and Engineering, Cambridge, Massachusetts

    D. R. PARSIGNAULT, H. GURSKY, E. M. KELLOGG, T. MATILSKY, S. MURRAY, E. SCHREIER, H. TANANBAUM & R. GIACCONI

  2. Laboratorium voor Ruimte Onderzoek, Utrecht, The Netherlands

    A. C. BRINKMAN

Authors
  1. D. R. PARSIGNAULT
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  2. H. GURSKY
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  3. E. M. KELLOGG
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  4. T. MATILSKY
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  5. S. MURRAY
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  6. E. SCHREIER
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  7. H. TANANBAUM
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  8. R. GIACCONI
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  9. A. C. BRINKMAN
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PARSIGNAULT, D., GURSKY, H., KELLOGG, E. et al. Observations of Cygnus X-3 by Uhuru. Nature Physical Science 239, 123–125 (1972). https://doi.org/10.1038/physci239123a0

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