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On the Possible Short-Period Irregular Light Fluctuations of V1357 CYG =CYG X-1

Published online by Cambridge University Press:  12 April 2016

M.I. Kumsiashvili  and
Z. Kraicheva
M.I. Kumsiashvili
Affiliation:
Abastumani Astrophysical Observatory, Georgian S.S.R., U.S.S.R.
Z. Kraicheva
Affiliation:
Section of Astronomy, Bulgarian Academy of Sciences

Abstract

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Photoelectric observations in U, B, V, were carried out to study the possible rapid (during a night) fluctuations of the close binary system V1357 Cyg, including the X-ray source Cyg X-1. Assuming the existence of irregular fast light fluctuations in the X-ray source Cyg X-1,the conclusion can be drawn that during these observations in 1979 the amplitude of the variations did not exceed 0.04 mag.

Type
Part IV: Cataclysmic Binaries and their Role in Stellar Evolution
Information
International Astronomical Union Colloquium , Volume 69: Binary and Multiple Stars as Tracers of Stellar Evolution , 1982 , pp. 467 - 472
Copyright
Copyright © Reidel 1982

References

REFERENCES

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