A MODEL FOR TYPE 2 CORONAL LINE FOREST (CLiF) AGNs
Author(s)Glidden, Ana; Rose, Marvin; Elvis, Martin; McDowell, Jonathan
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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.
DepartmentKavli Institute for Astrophysics and Space Research
The Astrophysical Journal
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.
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