Variable Line Profiles Due to Non-Axisymmetric Patterns in an Accretion Disc around a Rotating Black Hole | Zendy

V. Karas | Zendy; A. Martocchia | Zendy; Ladislav Šubr | Zendy

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Variable Line Profiles Due to Non-Axisymmetric Patterns in an Accretion Disc around a Rotating Black Hole

Author(s) -

V. Karas,

A. Martocchia,

Ladislav Šubr

Publication year - 2001

Publication title -

publications of the astronomical society of japan

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.99

H-Index - 110

eISSN - 2053-051X

pISSN - 0004-6264

DOI - 10.1093/pasj/53.2.189

Subject(s) - physics , astrophysics , accretion (finance) , parametrization (atmospheric modeling) , black hole (networking) , ray tracing (physics) , rotational symmetry , spectral line , emissivity , rotating black hole , spiral (railway) , bulge , radiative transfer , astronomy , optics , mechanics , galaxy , mathematical analysis , mathematics , computer network , routing protocol , routing (electronic design automation) , computer science , link state routing protocol

We have explored spectral line profiles due to spiral patterns in accretiondiscs around black holes. A parametrization was employed for the shape andemissivity of spiral waves, which can be produced by non-axisymmetricperturbations affecting the disc density and ionization structure. The effectsof the light-travel time, energy shift, and gravitational focusing near to arotating black hole were taken into account. A high-resolution ray-tracing codewas used to follow the time variations of the synthetic line profile. A varietyof expected spectral features were examined and the scheme applied to a broadiron line observed in MCG-6-30-15.Comment: 11 pages (LaTeX), 7 figures (EPS); PASJ accepte

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