Variable line profiles due to non-axisymmetric patterns in an accretion disc around a rotating black hole

Details Variable line profiles due to non-axisymmetric patterns in an accretion disc around a rotating black hole Variable line profiles due to non-axisymmetric patterns in an accretion disc around a rotating black hole

2001-02-27

arxiv.org/abs/astro-ph/0102460v1

Astronomy and Astrophysics

Astrophysics

11 pages (LaTeX), 7 figures (EPS); PASJ accepted

Scientific paper

We have explored spectral line profiles due to spiral patterns in accretion discs around black holes. A parametrization was employed for the shape and emissivity of spiral waves, which can be produced by non-axisymmetric perturbations affecting the disc density and ionization structure. The effects of the light-travel time, energy shift, and gravitational focusing near to a rotating black hole were taken into account. A high-resolution ray-tracing code was used to follow the time variations of the synthetic line profile. A variety of expected spectral features were examined and the scheme applied to a broad iron line observed in MCG-6-30-15.

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