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| Paper: |
On Time Variability and Other Complications in Studying the UV Broad Absorption Lines of Quasars: Results from Numerical Simulations of Radiation Driven Disk Winds. |
| Volume: |
460, AGN Winds in Charleston |
| Page: |
171 |
| Authors: |
Proga, D.; Rodriguez-Hidalgo, P.; Hamann, F. |
| Abstract: |
We review the main results from axisymmetric, time-dependent
hydrodynamical simulations of radiation driven disk winds in AGN. We
illustrate the capability of such simulations to provide useful
insights into the three domains of observational astronomy:
spectroscopy, time-variability, and imaging. Specifically,
the synthetic line profiles predicted by the simulations
resemble the broad absorption lines observed in quasars.
The intrinsically time dependent nature of radiation driven disk winds
that have been predicted by the simulations can be supported
by a growing number of the observed dramatic variability in
the UV absorption lines.
And finally, the intensity maps predicted by the simulations
give physical and geometrical justification to the phenomenologically
deduced fact that a proper interpretation of the observed line absorption
requires the wind covering factor to be considered as being
partial, inhomogeneous, and velocity dependent. |
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