Modeling of orbital modulation of Cygnus X-3 by particle simulations

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dc.creatorVilhu, Osmi
dc.creatorHakala, Pasi
dc.creatorHjalmarsdotter, Linnea
dc.creatorHannikainen, Diana
dc.creatorPaizis, Ada
dc.creatorMcCollough, Michael
dc.date2007-05-11
dc.date.accessioned2026-07-07T08:00:56Z
dc.date.available2026-07-07T08:00:56Z
dc.descriptionThe 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 absorption in this envelope were computed and compared with observed IBIS/ISGRI and BATSE light curves. The matching was relatively good. For reasonable values of binary parameters (masses, inclination) and wind velocities, a stable envelope was formed during a few binary orbits. Assuming approximately 10^-6 solar mass/year for the rate of the WR-wind, the observed light curves and accretion luminosity can be re-produced (assuming Thomson scattering opacity in the ionized He-rich envelope). The illuminated envelope can also model the CHANDRA-spectrum using the photoionizing XSTAR-code. Furthermore, we discuss observed radial velocity curves of IR emission lines in the context of simulated velocity fields and find good agreement.
dc.description4 pages (pdf), proceedings of the 6th INTEGRAL Workshop 'The Obscured Universe', July 2-8 2006, ESA SP-622
dc.identifierhttps://arxiv.org/abs/0705.1639
dc.identifierhttp://arxiv.org/abs/0705.1639
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/128800
dc.subjectAstrophysics
dc.titleModeling of orbital modulation of Cygnus X-3 by particle simulations
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