66 citations · 89 across the 3 of their papers we have counts for
3 papers
astro-ph.HE2021★ 1 cited
Hunting for the nature of the enigmatic narrow-line Seyfert 1 galaxy PKS 2004-447
M. Berton, G. Peluso, P. Marziani +19
Narrow-line Seyfert 1 (NLS1) galaxies are a class of active galactic nuclei (AGN) that, in some cases, can harbor powerful relativistic jets. One of them, PKS 2004-447, shows gamma…
astro-ph2000★ 66 cited
The Demise of the Classical BLR in the Luminous Quasar PG1416-129
Jack W. Sulentic, Paolo Marziani, Tomaz Zwitter +2
New observations of the broad-line quasar PG1416-129 reveal a large decline in its continuum luminosity over the past ten years. In response to the continuum change the ``classical…
astro-ph1992★ 22 cited
Evidence for a Very Broad Line Region in PG 1138+222
Paolo Marziani, Jack W. Sulentic
We present a high S/N spectrum for the quasar PG 1138+222. We detect a very broad HeII4686 emission line component with twice the FWHM of the conventional broad line region (BLR…