Integral observation of Cyg X-1 in an intermediate state
Astrophysics
2007-05-23 v1
Abstract
We present preliminary results of an observation of Cygnus X-1 with INTEGRAL performed on June 7-11 2003. Both spectral and variability properties of the source indicate that Cygnus X-1 was in an intermediate state. As expected during state transitions, we find an anticorrelation between the 3-10 keV and the 15 GHz radio fluxes and a strong correlation between the 3-200 keV hardness and radio flux.
Keywords
Cite
@article{arxiv.astro-ph/0411069,
title = {Integral observation of Cyg X-1 in an intermediate state},
author = {J. Malzac and P. O. Petrucci and E. Jourdain and P. Sizun and M. Cadolle and G. Pooley and C. Cabanac and S. Chaty and T. Belloni and J. Rodriguez and J. P. Roques and P. Durouchoux and A. Goldwurm and P. Laurent},
journal= {arXiv preprint arXiv:astro-ph/0411069},
year = {2007}
}
Comments
4 pages, 8 figures, to appear in the proceedings of the 5th INTEGRAL workshop "The INTEGRAL Universe", (Munich, February 2004), ESA Special Publication SP-552