A MODEL FOR TYPE 2 CORONAL LINE FOREST (CLiF) AGNs
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Glidden-2016-A MODEL FOR TYPE 2 C.pdf
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Author(s)
Glidden, Ana
Rose, Marvin
Elvis, Martin
McDowell, Jonathan
Date Issued
June 2016
Journal
The Astrophysical Journal
Publisher
IOP Publishing
Citation
Glidden, Ana, Marvin Rose, Martin Elvis, and Jonathan McDowell. “A MODEL FOR TYPE 2 CORONAL LINE FOREST (CLiF) AGNs.” The Astrophysical Journal vol. 824, no. 1, 34, June 2016, pp. 1-8. © 2016. The American Astronomical Society.
Version
Final published version
Abstract
We present a model for the classification of Coronal Line Forest Active Galactic Nuclei (CLiF AGNs). CLiF AGNs are of special interest due to their remarkably large number of emission lines, especially forbidden high-ionization lines (FHILs). Rose et al. suggest that their emission is dominated by reflection from the inner wall of the obscuring region rather than direct emission from the accretion disk. This makes CLiF AGNs laboratories to test AGN-torus models. Modeling an AGN as an accreting supermassive black hole surrounded by a cylinder of dust and gas, we show a relationship between the viewing angle and the revealed area of the inner wall. From the revealed area, we can determine the amount of FHIL emission at various angles. We calculate the strength of [Fe vii]λ6087 emission for a number of intermediate angles (30°, 40°, and 50°) and compare the results with the luminosity of the observed emission line from six known CLiF AGNs. We find that there is good agreement between our model and the observational results. The model also enables us to determine the relationship between the type 2:type 1 AGN fraction vs the ratio of torus height to radius, h/r.
MIT Department
MIT Kavli Institute for Astrophysics and Space Research
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DOI of Published Version
https://doi.org/10.3847/0004-637x/824/1/34
