273 citations · 1.3k across the 19 of their papers we have counts for
20 papers
On the structure and energetics of quasar broad absorption-line outflows
Fred Hamann, Hanna Herbst, Isabelle Paris +1
Quasar accretion-disk outflows might play an important role in galaxy evolution, but they are notoriously difficult to study due to line saturation and blending problems in the Ly-…
Quasar outflow energetics from broad absorption line variability
S. M. McGraw, J. C. Shields, F. W. Hamann +2
Quasar outflows have long been recognized as potential contributors to the co-evolution between supermassive black holes (SMBHs) and their host galaxies. The role of outflows in AG…
The effect of nuclear gas distribution on the mass determination of supermassive black holes
J. E. Mejía-Restrepo, P. Lira, H. Netzer +2
Supermassive black holes reside in the nuclei of most galaxies. Accurately determining their mass is key to understand how the population evolves over time and how the black holes…
Quasars with PV broad absorption in BOSS data release 9
Daniel M. Capellupo, Fred Hamann, Hanna Herbst +7
Broad absorption lines (BALs) found in a significant fraction of quasar spectra identify high-velocity outflows that might be present in all quasars and could be a major factor in…
A Comparison of Two Methods for Estimating Black Hole Spin in Active Galactic Nuclei
Daniel M. Capellupo, Gaylor Wafflard-Fernandez, Daryl Haggard
Angular momentum, or spin, is a fundamental property of black holes (BHs), yet it is much more difficult to estimate than mass or accretion rate (for actively accreting systems). I…
Active galactic nuclei at z ~ 1.5: III. Accretion discs and black hole spin
Daniel M. Capellupo, Hagai Netzer, Paulina Lira +2
This is the third paper in a series describing the spectroscopic properties of a sample of 39 AGN at , selected to cover a large range in black hole mass () and…