395 citations · 1.1k across the 23 of their papers we have counts for
3 papers · 1 filter
Emergence of a Quasar Outflow
F. Hamann, K. F. Kaplan, P. Rodriguez Hidalgo +2
We report the first discovery of the emergence of a high-velocity broad-line outflow in a luminous quasar, J105400.40+034801.2 at redshift z ~ 2.1. The outflow is evident in ultrav…
The Quasar-frame Velocity Distribution of Narrow CIV Absorbers
D. Nestor, F. Hamann, P. Rodriguez Hidalgo
We report on a survey for narrow (FWHM < 600 km/s) CIV absorption lines in a sample of bright quasars at redshifts in the Sloan Digital Sky Survey. Our main goal…
High Velocity Outflows in Quasars
Paola Rodriguez Hidalgo, Fred Hamann, Daniel Nestor +1
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 "unve…