X-ray lines from accreting black holes

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Models, Black Holes (Astronomy), Emission Spectra, Line Spectra, X Ray Astronomy, Angular Velocity, Deposition, Doppler Effect, Forbidden Transitions, Gravitational Effects, Magnetohydrodynamic Stability, Radiative Transfer, Resonance Scattering, Scattering Cross Sections, Spectral Line Width

Scientific paper

The X-ray emission line spectrum of black holes surrounded by accretion disks is considered. For steady-state disks, we calculate the expected line strengths, equivalent widths and broadening. This is done for the L-alpha line of S(15+), using a representative set of disk parameters, and for the intercombination and forbidden lines of Fe(24+), for a range of disk parameter. The values predicted differ from those of other models of X-ray sources, and are such that experimental detection appears feasible.

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