Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-06-05
AIP Conf.Proc.1054:3-11,2008
Astronomy and Astrophysics
Astrophysics
9 pages including 5 color encapsulated postscript figures; accepted for inclusion in the proceedings of "Cool Discs, Hot Flows
Scientific paper
10.1063/1.3002508
We provide a brief review of the physical processes behind the radiative driving of the winds of OB stars and the Bondi-Hoyle-Lyttleton capture and accretion of a fraction of the stellar wind by a compact object, typically a neutron star, in detached high-mass X-ray binaries (HMXBs). In addition, we describe a program to develop global models of the radiatively-driven photoionized winds and accretion flows of HMXBs, with particular attention to the prototypical system Vela X-1. The models combine XSTAR photoionization calculations, HULLAC emission models appropriate to X-ray photoionized plasmas, improved models of the radiative driving of photoionized winds, FLASH time-dependent adaptive-mesh hydrodynamics calculations, and Monte Carlo radiation transport. We present two- and three-dimensional maps of the density, temperature, velocity, ionization parameter, and emissivity distributions of representative X-ray emission lines, as well as synthetic global Monte Carlo X-ray spectra. Such models help to better constrain the properties of the winds of HMXBs, which bear on such fundamental questions as the long-term evolution of these binaries and the chemical enrichment of the interstellar medium.
Akiyama Shizuka
Liedahl Duane Allen
Mauche Christopher W.
Plewa Tomasz
No associations
LandOfFree
The Physics of Wind-Fed Accretion does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Physics of Wind-Fed Accretion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Physics of Wind-Fed Accretion will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-172070