Variable line profiles due to non-axisymmetric patterns in an accretion disc around a rotating black hole
Astrophysics
2015-06-24 v1
Abstract
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.
Cite
@article{arxiv.astro-ph/0102460,
title = {Variable line profiles due to non-axisymmetric patterns in an accretion disc around a rotating black hole},
author = {V. Karas and A. Martocchia and L. Subr},
journal= {arXiv preprint arXiv:astro-ph/0102460},
year = {2015}
}
Comments
11 pages (LaTeX), 7 figures (EPS); PASJ accepted