Ibragimov A.; Poutanen J.; Gilfanov M.; Zdziarski A.; Shrader C.
(2005)
We present the results of the spectral analysis of 42 simultaneous broad-band Ginga-OSSE and RXTE-OSSE observations of Cygnus X-1 carried out in 1991 and 1996-1999. The broad-band spectra from 3 to ∼1000 keV can be well ...