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Simultaneous Hard X-ray and Optical Observations of Sco X-1

Nature Physical Science volume 236, pages 53–55 (1972)Cite this article

Abstract

THE correlation between the X-ray and the optical emissions of Sco X-1 provides an important clue to the understanding of the properties of this peculiar astronomical object. Kita-mura et al.1 found an inverse correlation between the optical luminosity and the temperature as derived from rocket observations of X-rays in the energy range 2 to 20 keV. This suggests an inverse correlation between the optical luminosity and the observed intensity of hard X-rays. On the other hand, Hudson et al.2 observed X-ray enhancements in the energy range 7.7 to 12.5 keV in coincidence with optical flares, and Pelling et al.3 found a slow increase of the X-ray intensity in the energy range 20 to 40 keV correlated with the optical emission.

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References

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Authors and Affiliations

  1. Institute of Space and Aeronautical Science, University of Tokyo,

    M. MATSUOKA, M. FRAN, S. MIYAMOTO, J. NISHIMURA, M. ODA, Y. OGAWARA & S. OHTA

  2. Department of Physics, Nagoya University, Nagoya

    S. HAYAKAWA, I. KASAHARA, F. MAKINO & Y. TANAKA

  3. Tata Institute of Fundamental Research, Bombay

    P. C. AGRAWAL & B. V. SREEKANTAN

  4. Tokyo Astronomical Observatory, University of Tokyo,

    Y. HATANAKA

  5. Nizamiah Observatory, University of Osmania, Hyderabad

    S. SREEDHAR RAO

Authors
  1. M. MATSUOKA
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  2. M. FRAN
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  3. S. MIYAMOTO
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  4. J. NISHIMURA
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  5. M. ODA
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  6. Y. OGAWARA
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  7. S. OHTA
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  8. S. HAYAKAWA
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  9. I. KASAHARA
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  10. F. MAKINO
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  11. Y. TANAKA
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  12. P. C. AGRAWAL
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  13. B. V. SREEKANTAN
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  14. Y. HATANAKA
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  15. S. SREEDHAR RAO
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MATSUOKA, M., FRAN, M., MIYAMOTO, S. et al. Simultaneous Hard X-ray and Optical Observations of Sco X-1. Nature Physical Science 236, 53–55 (1972). https://doi.org/10.1038/physci236053a0

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  • DOI: https://doi.org/10.1038/physci236053a0

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