This third paper in the series modeling QSOs and AGN as clusters of accreting black
holes studies the accretion flow within an externally supplied cluster. Significant radiation
will be emitted by the cluster core, but the black holes in the outer halo, where the flow is
considered spherically symmetric, will not contribute much to the overall luminosity of the
source because of their large velocities relative to the infalling gas, and therefore their small
accretion radii. As a result the scenario discussed in Paper I will refer to the cluster cores,
rather than to entire clusters. This will steepen the high frequency region of the spectrum
unless inverse Compton scattering is effective. In many cases accretion flow in the central
part of the cluster will be optically thick to electron scattering resulting in a spectrum
featuring optically thick radiative component in addition to power -law regimes. The fitting
of these spectra to QSO and AGN observations is discussed, and application to 3C 273 is
worked out as an example.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/623896 |
| Date | 10 1900 |
| Creators | Pacholczyk, A. G., Stepinski, T. F., Stoeger, W. R. |
| Contributors | Univ Arizona, Steward Observ |
| Publisher | Steward Observatory, The University of Arizona (Tucson, Arizona) |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Article |
| Source | Steward Observatory Parker Library SO QB 4 .S752 ARCH |
| Rights | Copyright © All Rights Reserved. |
| Relation | Preprints of the Steward Observatory #837, http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1989ApJ...343..563P&db_key=AST&data_type=HTML&format=&high=3ed65e9cd030149 |
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