High-velocity Outflows in Quasars

Details High-velocity Outflows in Quasars High-velocity Outflows in Quasars

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..373..287r&link_type=abstract

The Central Engine of Active Galactic Nuclei, ASP Conference Series, Vol. 373, proceedings of the conference held 16-21 October,

Physics

7

Scientific paper

High-velocity (HV) outflows are an important but poorly understood aspect of quasar/SMBH evolution. Outflows during the luminous accretion phase might play a critical role in ``unveiling" young dusty AGN and regulating star formation in the host galaxies.
Most quasar studies have focused on the broad absorption lines (BALs). We are involved in a program to study a nearly unexplored realm of quasar outflow parameter space: HV winds with v>10,000 km/s (up to v≈ 0.2c) but small velocity dispersions (narrow absorption lines), such that Δ v/v ≪ 1. Narrow-line HV flows merit specific attention because they complement the BAL work and pose unique challenges for models of the wind acceleration, mass loss rates, launch radii, geometry, etc.
We have selected the brightest quasars at 1.8

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