Tuesday, February 19, 2013

1302.4287 (P. M. Plewa et al.)

Dynamics of gas and dust clouds in Active Galactic Nuclei    [PDF]

P. M. Plewa, M. Schartmann, A. Burkert
We analyze the motion of single optically thick clouds in the potential of a central mass under the influence of an anisotropic radiation field ~|cos(\theta)|, a model applicable to the inner region of active galactic nuclei. Resulting orbits are analytically soluble for constant cloud column densities. All stable orbits are closed, although they have non-trivial shapes. Furthermore, there exists a stability criterion in the form of a critical inclination, which depends on the luminosity of the central source and the column density of the cloud.
View original: http://arxiv.org/abs/1302.4287

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