360 citations · 3.8k across the 76 of their papers we have counts for
77 papers
Optical spectropolarimetry of extreme H line profiles in seven active galactic nuclei
J. Biedermann, F. Marin, D. Hutsemékers +1
Some active galactic nuclei (AGNs) are known to show extremely asymmetric broad Balmer lines, with their main peak redshifted or blueshifted by thousands of km s, severely c…
The reddening of NGC 7469 and evidence for variable extinction
C. Martin Gaskell, Ananya R. Kamath, Emily I. Kwan +1
We estimate the reddening of the broad-line region and continuum of the active galactic nucleus NGC 7469 during the 1996 International AGN Watch multi-wavelength monitoring campaig…
The direction of rotation of supermassive black holes is unrelated to the direction of rotation of the host galaxy
Loren Gigi, C. Martin Gaskell
We compare the apparent directions of rotation in the plane of the sky of active galactic nuclei (AGNs) and their host galaxies. The direction of rotation of the galaxy was inferre…
Hot, Photoionized X-ray Gas in Two Luminous Type 2 Quasars: Chandra-HST Evidence for a Wind-Driven Sequence
Anna Trindade Falcão, S. Kraemer, L. Feuillet +17
We present new Chandra/ACIS-S imaging spectroscopy of two luminous type 2 quasars, FIRST J120041.4+314745 (=0.116) and 2MASX J13003807+5454367 (=0.088), and compare their X-r…
Large discrepancies in error estimates for reverberation times derived from light curves of active galactic nuclei
C. Martin Gaskell
Light-travel-time delays provide one of the most powerful ways of learning about the structure and kinematics of active galactic nuclei (AGNs). Estimating delays from observations…
Hubble Space Telescope Observations of Nearby Type 1 Quasars. I. Characterisation of the Extended [O III] 5007Å Emission
Anna Trindade Falcão, S. B. Kraemer, T. C. Fischer +13
We use the Hubble Space Telescope to analyse the extended [O III] 5007A emission in seven bright radio-quiet type 1 quasars (QSO1s), focusing on the morphology and physical conditi…