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The Physics of Wind-Fed Accretion
Christopher W. Mauche, Duane A. Liedahl, Shizuka Akiyama +1
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 s…
Constraints on the Velocity and Spatial Distribution of Helium-like Ions in the Wind of SMC X-1 from Observations with XMM-Newton/RGS
Patrick S. Wojdowski, Duane A. Liedahl, Timothy R. Kallman
We present here X-ray spectra of the HMXB SMC X-1 obtained in an observation with the XMM observatory beginning before eclipse and ending near the end of eclipse. With the Reflecti…
Hydrodynamic and Spectral Simulations of HMXB Winds
Christopher W. Mauche, Duane A. Liedahl, Shizuka Akiyama +1
We describe preliminary results of a global model of the radiatively-driven photoionized wind and accretion flow of the high-mass X-ray binary Vela X-1. The full model combines FLA…
Ionization structure of the warm wind in NGC 5548
K. C. Steenbrugge, J. S. Kaastra, D. M. Crenshaw +7
We present the results from our 140 ks XMM-Newton and 500 ks Chandra observation of NGC 5548. The velocity structure of the X-ray absorber is consistent with the velocity structure…
Atomic X-ray Spectroscopy of Accreting Black Holes
Duane A. Liedahl, Diego F. Torres
Current astrophysical research suggests that the most persistently luminous objects in the Universe are powered by the flow of matter through accretion disks onto black holes. Accr…
An Assessment of the Fe XVIII and Fe XIX Line Ratios from the Chandra Grating Observations of Capella
P. Desai, N. S. Brickhouse, J. J. Drake +8
Observations of Fe XVIII and Fe XIX X-ray, EUV, and FUV line emission, formed at the peak of Capella's (alpha Aurigae) emission measure distribution and ubiquitous in spectra of ma…