Astronomy and Astrophysics Seminars
The peculiar X-ray binary Cygnus X-3
by Prof. A. A. Zdziarski, (N. Copernicus Astronomical Center, Warsaw, Poland)
Tuesday, September 22, 2009
from
to
(Asia/Kolkata)
at Colaba Campus ( AG-66 )
at Colaba Campus ( AG-66 )
Description |
Cyg X-3 is a peculiar system, the only known X-ray binary in the Galaxy with a Wolf-Rayet companion. Its X-ray spectra are unusual, showing a high energy cutoff in the hard state at a much lower energy than that in other X-ray binaries. Its variability is also atypical, with no power above about 1 Hz. Both facts can be explained by the effect of a Thomson-thick cloud surrounding the X-ray source. We determine the optical depth and the size of the cloud, and propose its origin. |
Organised by | Prof. J.S. Yadav |