Abstract
The 2.2 μm flux from the infrared counterpart of Cygnus X-3 has been found to vary in phase with the X-ray flux with a 4.8 h period. The infrared observations imply a radius ~ 1 R ⊙ for the X-ray object and do not favor models involving a compact object such as a neutron star or a black hole.
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Becklin, E. E., Neugebauer, G., Hawkins, F. J., Mason, K. O., Sanford, P. W., Matthews, K., and Wynn-Williams, C. G.: 1973, Nature 245, 302.
Braes, L. L. E., Miley, G. K., Shane, W. W., Baars, J. W. M., and Goss, W. M.: 1973, Nature Phys. Sci.242, 66.
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Wynn-Williams, C.G. (1974). Infrared and X-Ray Variability of Cyg X-3. In: Kerr, F.J., Simonson, S.C. (eds) Galactic Radio Astronomy. International Astronomical Union/ Union Astronomique Internationale, vol 60. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-2263-7_50
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DOI: https://doi.org/10.1007/978-94-010-2263-7_50
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