The DOI matches its Crossref record; 22 of the 22 references it cites were found in a registry or an index.
The AGN-obscuring Torus: The End of the "Doughnut" Paradigm?
Open accessAbstract
Unified schemes of active galactic nuclei (AGNs) require an obscuring dusty torus around the central engine.The compact sizes (only a few parsecs) determined in recent high-resolution observations require that the obscuring matter be clumpy and located inside the region where the black hole gravity dominates over the galactic bulge.This location is in line with the scenario depicting the torus as the region of the clumpy wind coming off the accretion disk in which the clouds are dusty and optically thick.We study here the outflow scenario within the framework of hydromagnetic disk winds, incorporating the cloud properties determined from detailed modeling of the IR emission from clumpy tori.We find that torus clouds were likely detected in recent water maser observations of NGC 3079.In the wind scenario, the AGN main dynamic channel for release of accreted mass seems to be switching at low luminosities from torus outflow to radio jets.The torus disappears when the bolometric luminosity decreases below ∼ ergs s because the accretion onto the central black hole can no 42 Ϫ1 10 longer sustain the required cloud outflow rate.This disappearance seems to have been observed in both LINERs and radio galaxies.With further luminosity decrease, suppression of cloud outflow spreads radially inward from the disk's dusty, molecular region into its atomic, ionized zone, resulting in the disappearance of the broad emission-line region at lower luminosities yet to be determined.
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Cites
Unified Schemes for Radio-Loud Active Galactic Nuclei
Urry, C. M., & Padovani, P. (1995) · Publications of the Astronomical Society of the Pacific · doi:10.1086/133630 · Cited by 4,868
Hydromagnetic flows from accretion discs and the production of radio jets
Blandford, R. D., & Payne, D. G. (1982) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/199.4.883 · Cited by 4,102
Unified Models for Active Galactic Nuclei and Quasars
Antonucci, R. (1993) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.aa.31.090193.002353 · Cited by 3,943
Towards a unified model for black hole X-ray binary jets
Fender, R. P., Belloni, T. M., & Gallo, E. (2004) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2004.08384.x · Cited by 1,331
The fuelling of active galactic nuclei
Shlosman, I., Begelman, M. C., & Frank, J. (1990) · Nature · doi:10.1038/345679a0 · Cited by 552
Self-citationThe central dusty torus in the active nucleus of NGC 1068
Jaffe, W., Meisenheimer, K., Röttgering, H. J. A., Leinert, C., Richichi, A., Chesneau, O., Fraix-Burnet, D., Glazenborg-Kluttig, A., Granato, G.-L., Graser, U., et al. (2004) · Nature · doi:10.1038/nature02531 · Cited by 512
Hydromagnetic disk winds in young stellar objects and active galactic nuclei
Pelletier, G., & Pudritz, R. E. (1992) · The Astrophysical Journal · doi:10.1086/171565 · Cited by 436
Disk-driven hydromagnetic winds as a key ingredient of active galactic nuclei unification schemes
Konigl, A., & Kartje, J. F. (1994) · The Astrophysical Journal · doi:10.1086/174746 · Cited by 415
Ubiquitous Variability of X‐Ray–absorbing Column Densities in Seyfert 2 Galaxies
Risaliti, G., Elvis, M., & Nicastro, F. (2002) · The Astrophysical Journal · doi:10.1086/324146 · Cited by 353
On the Relationship between Radio Emission and Black Hole Mass in Galactic Nuclei
Ho, L. C. (2002) · The Astrophysical Journal · doi:10.1086/324399 · Cited by 346
Cited by
Cool outflows in galaxies and their implications
Veilleux, S., Maiolino, R., Bolatto, A. D., & Aalto, S. (2020) · The Astronomy and Astrophysics Review · doi:10.1007/s00159-019-0121-9 · Cited by 466
Gilman, D., Birrer, S., Nierenberg, A., Treu, T., Du, X., & Benson, A. (2020) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stz3480 · Cited by 268
High‐Resolution Mid‐Infrared Spectroscopy of Ultraluminous Infrared Galaxies
Farrah, D., Bernard‐Salas, J., Spoon, H. W. W., Soifer, B. T., Armus, L., Brandl, B., Charmandaris, V., Desai, V., Higdon, S., Devost, D., et al. (2007) · The Astrophysical Journal · doi:10.1086/520834 · Cited by 256
Giustini, M., & Proga, D. (2019) · Astronomy & Astrophysics · doi:10.1051/0004-6361/201833810 · Cited by 166
“Thermal emission features are absent, and intrinsic obscuring structures such as a torus or a BLR are not expected to exist (Nicastro 2000; Elitzur & Shlosman 2006; Elitzur & Ho 2009).”
Metadata
- Authors
- Elitzur, M., & Shlosman, I.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2006-09-05
- Volume
- 648
- Issue
- 2
- Pages
- L101-L104
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2033756463
- Cited by
- 489
- References
- 22
- FWCI
- 13.69
- Type
- journal article
- Language
- en
- Open access
- bronze
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