| Autor: |
Pacholczyk, A. G., Stepinski, T. F., Stoeger, W. R. |
| Rok vydání: |
1988 |
| Předmět: |
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| Zdroj: |
Steward Observatory Parker Library SO QB 4 .S752 ARCH |
| Druh dokumentu: |
Článek |
| Popis: |
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. |
| Databáze: |
Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
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