NLTE Models of Vertical structure of Accretion Disks around Stellar Mass Black Holes

Astronomy and Astrophysics – Astronomy

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Scientific paper

Recent upgrades of our computer program TLUSDISK are briefly described. These include a self-consistent treatment of Compton scattering, and the effects of X-ray continuum opacities of the most important metal species (C, N, O, Ne, Mg, Si, S, Ar, Ca, Fe, Ni). In the case the central degenerate object is a neutron star or a black hole, we allow for a full general relativistic treatment. We show the effects of Comptonization and metal opacities on the structure of disk under various conditions. We also present a simple analytic prescription for the vertical temperature structure of the disk in the presence of Comptonization, and show under what conditions a hot outer layer (a corona) is formed.

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