Dynamics, Shielding and Line Formation in Accretion Disk Winds from Active Galactic Nuclei

Details Dynamics, Shielding and Line Formation in Accretion Disk Winds from Active Galactic Nuclei Dynamics, Shielding and Line Formation in Accretion Disk Winds from Active Galactic Nuclei

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.4003m&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #40.03; Bulletin of the American Astronomical Society, Vol. 26, p.1369

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Scientific paper

We present a model for radiation-driven winds from accretion disks in active galactic nuclei. In particular, we discuss how X-ray shielding allows resonance-line radiation pressure to accelerate these winds to high velocities. Because the shielding gas blocks X-rays but transmits EUV radiation, these winds are similar to line-driven winds from O stars. We also present preliminary calculations of the absorption and emission line profiles expected from such a disk wind. This model provides explanations for a variety of observational conundrums: the predicted fraction of QSOs with BALs is ~ 10%, the predicted BAL velocity widths are typically ~ 10,000 km s(-1) , and BALs should be rare or absent in radio-loud quasars and other AGNs with hard, bright X-ray spectra.

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