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Radiative transfer simulations of multiphase AGN tori: thermal emission and polarisation

Published online by Cambridge University Press:  24 July 2015

M. Baes ,
M. Stalevski ,
P. Camps ,
J. Fritz  and
L. Č. Popović
M. Baes
Affiliation:
Sterrenkundig Observatorium, Universiteit Gent, Belgium
M. Stalevski
Affiliation:
Sterrenkundig Observatorium, Universiteit Gent, Belgium Departamento de Astronomía, Universidad de Chile, Chile Astronomical Observatory, Belgrade, Serbia
P. Camps
Affiliation:
Sterrenkundig Observatorium, Universiteit Gent, Belgium
J. Fritz
Affiliation:
Centro de Radioastronomía y Astrofísica, UNAM Morelia, Mexico
L. Č. Popović
Affiliation:
Astronomical Observatory, Belgrade, Serbia
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Abstract

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The unification model of active galactic nuclei postulates an accreting supermassive black hole as the central engine, surrounded by a putative dusty torus. This dust absorbs the incoming radiation, re-emits it in the infrared and obscures our view of the central region at certain inclinations. We present a new set of AGN models, in which the torus is modelled as a 3D multiphase medium. These new models can explain the observed spectral energy distribution of AGNs over the entire infrared domain, including the observed silicate feature strength and the level of near-infrared continuum. A new generation of multi-phase models, based on hydrodynamical simulations, is being constructed. We will compute the polarisation structure of these physically motivated 3D torus models, and compare them to simpler smooth torus models and to the available observational data.

Keywords

galaxies: activeradiative transferradiation mechanisms: thermalpolarisation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Symposium S305: Polarimetry: From the Sun to Stars and Stellar Environments , December 2014 , pp. 377 - 380
Copyright
Copyright © International Astronomical Union 2015 

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