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Infrared constraints on AGN tori models

journal contribution
posted on 2023-06-07, 23:09 authored by E Hatziminaoglou, J Fritz, I Perez-Fournon, A Franceschini, A Hernan-Caballero, A Afonso-Luis, C Lonsdale, F Fang, Seb OliverSeb Oliver, M Rowan-Robinson, D Shupe, H Smith, J Surace, E Gonzales-Solares, The SWIRE Team
This work focuses on the properties of dusty tori in active galactic nuclei (AGN) derived from the comparison of SDSS type 1 quasars with mid-Infrared (MIR) counterparts and a new, detailed torus model. The infrared data were taken by the Spitzer Wide-area InfraRed Extragalactic (SWIRE) Survey. Basic model parameters are constraint, such as the density law of the graphite and silicate grains, the torus size and its opening angle. A whole variety of optical depths is supported. The favoured models are those with decreasing density with distance from the centre, while there is no clear tendency as to the covering factor, ie small, medium and large covering factors are almost equally distributed. Based on the models that better describe the observed SEDs, properties such as the accretion luminosity, the mass of dust, the inner to outer radius ratio and the hydrogen column density are computed.

History

Publication status

  • Published

Journal

ArXiv Astrophysics

Publisher

e-prints

Issue

03

Volume

2006

Page range

0603359

Pages

4.0

Department affiliated with

  • Physics and Astronomy Publications

Notes

Franceschini, A.; Hernan-Caballero, A.; Afonso-Luis, A.; Lonsdale, C.; Fang, F.; Rowan-Robinson, M.; Shupe, D.; Smith, H.; Surace, J.; Gonzales-Solares, E.; the SWIRE Team

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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