Cygnus X-3 is the generator of electromarnetic emission from radiowaves to Gamma-rays of high energies
The close X-ray binary with relativisic jest, contained probably
a black hole, Cygnus X-3 has been detected in first time
in Gamma-rays at enegries higher 100 ķeV (AGILE, Tavani et al., Nature, 2009)
during the intense radio flares, monitored with RATAN-600 radio telecope.
Thus in the first time such high energy radiation was detected
from the galactic binary star, located on 30000 light years from Sun.
Measurements in 2009-2010 period confirmed this discovery [Fig.3])
Un to now such HE gamma-emission has been detected only from
the active galactic nuclei - extra-galactic objects with supoer-massive
black holes - quasars and blasars. The bright radio flares from Cygnus X-3,
caused by the massive ejections of matter with velocity close to speed of
light accur in the certain "huper-sort" X-ray states
(RXTE PCA), that was in the first time determined in the studies of
HID - "hardness-intensity diagram" [Fig.4].
Fig.1.Radio map suround the Cygnus X-3
Fig.2.X-ray image of Cygnus X-3 (Chandra)
Fig.3. Light curves Cygnus X-3 in gamma-rays (AGILE) and in radio cm-bands (Ryle tel., RATAN-600 and Mestahovi)
Fig.4. "Hardness-intensity diagram", plotted for 137 pointing PCA data of the RXTE observatory. In the top -- 6 X-ray spectra, determing the six different X-ray states. Below HID -- the each X-ray point have color, corresponded to the radio flux densities scale, given in right part