Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..938...76j&link_type=abstract
SPECTRAL LINE SHAPES IN ASTROPHYSICS: VI Serbian Conference on Spectral Line Shapes in Astrophysics (VI SCSLSA). AIP Conference
Astronomy and Astrophysics
Astrophysics
2
Infall, Accretion, And Accretion Disks, X-Ray, Quasars
Scientific paper
X-ray emission from a relativistic accretion disk around central Black Hole (BH) of Active Galactic Nuclei (AGN) could be significantly absorbed by an outfiowing wind, especially in case of so-called Low Ionization Broad Absorption Line (LoBAL) quasars. Recent observations of such quasars (e.g. Mrk 231) confirmed the presence of X-ray absorbers in these objects. In this paper we studied the changes of the Fe Kα spectral line shape in the case when a portion of the accretion disk is blocked from our view by the X-ray absorbing/obscuring material, while the rest of the accretion disk is less absorbed/obscured and visible. To analyze the disk emission we used a ray-tracing method considering both metrics: Schwarzschild and Kerr. Obtained results show that absorbing/obscuring material can induce significant changes in the Fe Kα line shape, depending on geometry of the X-ray absorbers.
Jovanović Predrag
Popovic Luka C.
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