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- W3098353721 abstract "Double-peaked broad emission lines in active galactic nuclei are generally considered to be formed in an accretion disc. In this paper, we compute the profiles of reprocessing emission lines from a relativistic, warped accretion disc around a black hole in order to explore the possibility that certain asymmetries in the double-peaked emission-line profile which cannot be explained by a circular Keplerian disc may be induced by disc warping. The disc warping also provides a solution for the energy budget in the emission-line region because it increases the solid angle of the outer disc portion subtended to the inner portion of the disc. We adopted a parametrized disc geometry and a central point-like source of ionizing radiation to capture the main characteristics of the emission-line profile from such discs. We find that the ratio between the blue and red peaks of the line profiles becoming less than unity can be naturally predicted by a twisted warped disc, and a third peak can be produced in some cases. We show that disc warping can reproduce the main features of multipeaked line profiles of four active galactic nuclei from the Sloan Digital Sky Survey." @default.
- W3098353721 created "2020-11-23" @default.
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- W3098353721 date "2008-09-01" @default.
- W3098353721 modified "2023-09-27" @default.
- W3098353721 title "Broad reprocessed Balmer emission from warped accretion discs" @default.
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- W3098353721 doi "https://doi.org/10.1111/j.1365-2966.2008.13538.x" @default.
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