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Disk-outflow Connection and the Molecular Dusty Torus
Moshe Elitzur
Toroidal obscuration is a keystone of AGN unification. There is now direct evidence for the torus emission in infrared, and possibly water masers. Here I summarize the torus proper…
Unveiling the nature of Seyfert nuclei with 1 - 100 micron spectral energy distributions
C. L. Buchanan, J. F. Gallimore, C. P. O'Dea +8
The infrared is a key wavelength regime for probing the dusty, obscured nuclear regions of active galaxies. We present results from an infrared study of 87 nearby Seyfert galaxies…
AGN Dusty Tori: I. Handling of Clumpy Media
Maia Nenkova, Matthew M. Sirocky, Zeljko Ivezic +1
According to unified schemes of Active Galactic Nuclei (AGN), the central engine is surrounded by dusty, optically thick clouds in a toroidal structure. We have recently developed…
The Toroidal Obscuration of Active Galactic Nuclei
Moshe Elitzur
Observations give strong support for the unification scheme of active galactic nuclei. The scheme is premised on toroidal obscuration of the central engine by dusty clouds that are…
Silicates in Ultra-Luminous Infrared Galaxies
M. M. Sirocky, N. A. Levenson, M. Elitzur +2
We analyze the mid-infrared (MIR) spectra of ultraluminous infrared galaxies (ULIRGs) observed with the Spitzer Space Telescope's Infrared Spectrograph. Dust emission dominates the…
The Effect of 53 micron IR Radiation on 18 cm OH Megamaser Emission
Philip Lockett, Moshe Elitzur
OH megamasers (OHMs) emit primarily in the main lines at 1667 and 1665 MHz, and differ from their Galactic counterparts due to their immense luminosities, large linewidths and 1667…