出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：I will present detailed classification of the X-ray states of Cyg X-3 based on the spectral shape
and a new classification of the radio states based on the long-term correlated behaviour of the
radio and soft X-ray light curves. Except for the effect of strong absorption and the energy of
the high-energy break in the hard state, the X-ray spectral states of Cyg X-3 closely correspond
to the canonical X-ray states of black-hole binaries. Also, the radio X-ray correlation closely
corresponds to that found in black-hole binaries, but it significantly differs from that in neutronstar
binaries. Overall, our results strongly support the presence of a black hole in Cyg X-3.
