Kinematics of gas clouds in the broad-line region of active galactic nuclei and quasars

Conference · Sun Jan 01 04:00:00 EST 1984 · Adv. Space Res.; (United States)

OSTI ID:6237020

Tsvetanov, Z I; Zhekov, S A

The kinematics of gas clouds in broad-line region of active galactic nuclei and quasars is considered. The motion of the clouds is governed by three forces - gravitational influence from the central supermassive body, radiational pressure from the continuum radiation, and resistance of the intercloud medium. Clouds move radial but only outward motion gives a velocity field, which is in accordance with the observational data. The profiles of the permitted lines are obtained in some simplified assumptions for the emissive capacity of the gas in clouds, and are in good agreement with the observational data. In the framework of the model under consideration there is a possibility to estimate some physical parameters of the nuclei such as mass of the central body and density of the intercloud medium. 7 references.

• Research Organization: Samostoiatelna Sektsiia Astronomiia, Sofia, Bulgaria
• OSTI ID: 6237020
• Report Number(s): CONF-8307144-
• Conference Information: Journal Name: Adv. Space Res.; (United States) Journal Volume: 3
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BLACK HOLES
COSMIC GASES
COSMIC RADIO SOURCES
DISTRIBUTION
EMISSION SPECTRA
FLUIDS
GALAXIES
GALAXY NUCLEI
GASES
MASS DISTRIBUTION
MOTION
QUASARS
RADIAL VELOCITY
SEYFERT GALAXIES
SPATIAL DISTRIBUTION
SPECTRA
VELOCITY