Absence of Linear Polarization in Cygnus X-3

Disk - Jet Connection in Cygnus X - 3

We present the results of a detailed correlation study between the soft X-ray, hard X-ray, and radio emission (obtained from RXTE ASM , BATSE, and GBI observations, respectively) of the bright radio emitting Galactic X-ray binary Cygnus X-3. We detect a very strong positive correlation between the soft X-ray and radio emission during the low-hard and minor flaring periods of the source, and an ...

MAGIC observations of Cygnus X-3

Orbital Dynamics of Cygnus X - 3

Orbital-phased-resolved infrared spectra of Cygnus X-3 in outburst and quiescence, including tomo-graphic analysis, are presented. We confirm the phasing of broad He ii and N v lines in quiescence, such that maximum blue shift corresponds to the X-ray minimum at Φ = 0.00 ± 0.04. In outburst, double-peaked He i structures show a similar phasing with two significant differences: (a) although vary...

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...

Low frequency radio monitoring of Cygnus X - 1 and Cygnus X - 3

We present results of monitoring observations of the micro-quasars CygnusX-1 and CygnusX-3 at 0.61 and 1.28GHz. The observations were performed with Giant Meter-wave Radio Telescope, GMRT, between 2003 June and 2005 January. Variable, unresolved sources were found in both cases. CygX-1 was detected in about half of the observations, with a median flux density about 7mJy at each frequency. The r...