Observations and analysis of a powerfull X-ray outburst from Cyg X-3 in 2007

1Fidelis, VV
1Scientific-Research Institute “Crimean Astrophysical Observatory” of the Ministry for Education and Science of Ukraine, Nauchny, Crimea, Ukraine
Kosm. nauka tehnol. 2009, 15 ;(1):68-70
Publication Language: Russian
According to ASM/RXTE data, a powerful outburst of a duration of about three months was detected from micro-quasar Cyg X-3 in 2007. The maximal emission intensity in the energy range from 1.5 to 12 keV was reached about 0.6 Crab. The analysis of the light curve for this period showed the presence of anticorrelation between X-ray intensity and hardness ratio. In the power spectrum of the source daily and semi-diurnal harmonics were found. The intensity are noticeably less than that for the 4.8-hour orbital harmonic.
Keywords: light curve, micro-quasar, X-ray
1. Bonnet-Bidaud J.-M., Chardin G. Cygnus X-3, a critical review. Phys. reports. A Review Section of Physics Letters, 170 (6), 414 p. (1988).

2. Miller-Jones J.C.A., Blundell K.M., Rupen M. P., et al. Time-sequence multi-radio frequency observations of Cygnus X-3 in flare. Astrophys. J., 600, 368–389 (2004).