X-ray Observations of Cygnus X-3 by Copernicus

Study the X - ray Dust Scattering Halos with Chandra Observations of Cygnus X - 3 and Cygnus X - 1

We improve the method proposed by Yao et al (2003) to resolve the X-ray dust scattering halos of point sources. Using this method we re-analyze the Cygnus X-1 data observed with Chandra (ObsID 1511) and derive the halo radial profile in different energy bands and the fractional halo intensity (FHI) as I(E) = 0.402×E keV. We also apply the method to the Cygnus X-3 data (Chandra ObsID 425) and de...

MAGIC observations of Cygnus X-3

Dust Scattering Halos with Chandra Observations of Cygnus X - 3 and Cygnus X - 1

We improve the method proposed by Yao et al (2003) to resolve the X-ray dust scattering halos of point sources. Using this method we re-analyze the Cygnus X-1 data observed with Chandra (ObsID 1511) and derive the halo radial profile in different energy bands and the fractional halo intensity (FHI) as I(E) = 0.402×E keV. We also apply the method to the Cygnus X-3 data (Chandra ObsID 425) and de...

Chandra X - ray Observations of Cygnus A and Pictor A

Results from Chandra observations of the two nearest, powerful radio galaxies are summarised.

First e - VLBI observations of Cygnus X - 3

We report the results of the first two 5 GHz e-VLBI observations of the X-ray binary Cygnus X-3 using the European VLBI Network. Two successful observing sessions were held, on 2006 April 20, when the system was in a quasi-quiescent state several weeks after a major flare, and on 2006 May 18, a few days after another flare. At the first epoch we detected faint emission probably associated with ...