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http://hdl.handle.net/2289/2455| Title: | The relevance of the Eddington limit to thick accretion disks |
| Authors: | Nityananda, R. Narayan, R. |
| Keywords: | ACCRETION DISKS GALACTIC NUCLEI ACTIVE GALACTIC NUCLEI BLACK HOLES (ASTRONOMY) LUMINOSITY OPTICAL THICKNESS RADIATIVE TRANSFER |
| Issue Date: | 1984 |
| Publisher: | Elsevier B.V. |
| Citation: | Advances in Space Research, 1984, Vol.3, p319-321 |
| Abstract: | Thick accretion disks with narrow funnels around massive black holes are considered promising models for active galactic nuclei. These models assumed a supercritical accretion rate and emit collimated beams with super-Eddington luminosities. Approximate calculations of the interaction between the emerging radiation and the walls for an optically thin funnel are made. The results are sensitive to the sound velocity and to the viscosity parameter. They suggest that a significant particle luminosity can accompany the radiation in the super-Eddington case. By applying an Eddington type limit based on mechanical equilibrium to a suitably chosen interior surface in the disk, it is found that energy transport, if radiative, can strongly limit the efficiency of these models. |
| Description: | Restricted Access. COSPAR, IAU, ESA, et al., Symposium on High-Energy Astrophysics and Cosmology, Pamporovo, Bulgaria, July 18-23, 1983. |
| URI: | http://hdl.handle.net/2289/2455 |
| ISSN: | 0273-1177 |
| Alternative Location: | http://adsabs.harvard.edu/cgi-bin/bib_query?1984AdSpR...3..319N http://dx.doi.org/10.1016/0273-1177(84)90109-1 |
| Copyright: | 1984 Elsevier B.V. |
| Appears in Collections: | Research Papers (A&A) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 1984 Adv Space Res V3 p319.pdf Restricted Access | Restricted Access | 113.77 kB | Adobe PDF | View/Open Request a copy |
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