Radiation of accretion disks in quasars and galactic nuclei
Conference
·
· Adv. Space Res.; (United States)
OSTI ID:6015499
An analytic approximation of the radiation spectra emitted from the accretion disks of hypothesized supermassive black holes at the centers of quasars and active galactic nuclei is defined. Stellar atmosphere surface gravity and temperature are assumed for every point on the disk surface. Known stellar spectra, i.e., blue and red supergiants with luminosities close to the Eddington limit, are then used to integrate the spectra over the entire disk. Limiting conditions for the model are noted to exist in terms of the unknown ratio of the effective viscosity to the product of sonic velocity and the half-thickness of the disk. Only disks with a small value for the unknown ratio can therefore be modeled using stellar atmospheres as a reference. 9 references.
- Research Organization:
- Institut Kosmicheskikh Issledovanii, Moscow, USSR
- OSTI ID:
- 6015499
- Report Number(s):
- CONF-8307144-
- Conference Information:
- Journal Name: Adv. Space Res.; (United States) Journal Volume: 3
- Country of Publication:
- United States
- Language:
- English
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