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The nature of the hard state of Cygnus X-3
L. Hjalmarsdotter, A. A. Zdziarski, S. Larsson +4
The X-ray binary Cygnus X-3 is a highly variable X-ray source that displays a wide range of observed spectral states. One of the main states is significantly harder than the others…
Modeling of orbital modulation of Cygnus X-3 by particle simulations
Osmi Vilhu, Pasi Hakala, Linnea Hjalmarsdotter +3
The formation of the circumbinary envelope of Cygnus X-3 was studied by particle simulations of the WR (Wolf Rayet) companion wind. Light curves resulting from electron scattering…
INTEGRAL and Swift observations of EXO 2030+375 during a giant outburst
D. Klochkov, D. Horns, A. Santangelo +11
Aims: We investigate the X-ray spectral and timing properties of the high mass X-ray binary EXO 2030+375 observed during its June-September 2006 giant (type II) outburst. Methods:…