Composite profile of the Fe K alpha spectral line emitted from a binary system of supermassive black holes
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We used a model of a relativistic accretion disk around a supermassive black hole (SMBH), based on ray-tracing method in the Kerr metric, to study the variations of the composite Fe K alpha line emitted from two accretion disks around SMBHs in a binary system. We assumed that the orbit of such a binary is approximately Keplerian, and simulated the composite line shapes for different orbital elements, accretion disk parameters and mass ratios of the components. The obtained results show that, if observed in the spectra of some SMBH binaries during their different orbital phases, such composite Fe K alpha line profiles could be used to constrain the orbits and several properties of such SMBH binaries. (C) 2013 COSPAR. Published by Elsevier Ltd. All rights reserved.
Keywords:Black holes: black-hole binaries / Galaxies: active / Accretion and accretion disks / Spectral lines / X-ray emission spectra
Source:Advances in Space Research, 2014, 54, 7, 1448-1457
- Gravitation and the large scale structure of the Universe (RS-176003)
- NSF [AST-12011677]