Self-Consistent Dynamical Model of the Broad Line Region

Frontiers in Astronomy and Space Sciences

Panda, Swayam¹  Karas, Vladimir¹  Czerny, Bozena¹  Wildy, Conor²  Hryniewicz, Krzysztof²  Sredzinska, Justyna²  Li, Yan-Rong³ 

[1] Center for Theoretical Physics, Polish Academy of Sciences, Warsaw, Poland;Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw, Poland;Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China

关键词: emission lines;    active galactic nuclei;    Broad line region;    accretion disk;    black hole;   

DOI  :  10.3389/fspas.2017.00005

学科分类：空间科学

来源: Frontiers

【 摘 要 】

We develope a self-consistent description of the Broad Line Region based on the concept of the failed wind powered by the radiation pressure acting on dusty accretion disk atmosphere in Keplerian motion. The material raised high above the disk is illuminated, dust evaportes, and the matter falls back towards the disk. This material is the source of emission lines. The model predicts the inner and outer radius of the region, the cloud dynamics under the dust radiation pressure and, subsequently, just the gravitational field of the central black hole, which results in assymetry between the rise and fall. Knowledge of the dynamics allows to predict the shapes of the emission lines as functions of the basic parameters of an active nucleus: black hole mass, accretion rate, black hole spin (or accretion efficiency) and the viewing angle with respect to the symmetry axis. Here we show preliminary results based on analytical approximations to the cloud motion.

【 授权许可】

CC BY