190 citations · 591 across the 12 of their papers we have counts for
12 papers
Long-term variability of the optical spectra of NGC 4151: I. Light curves and flux correlations
A. I. Shapovalova, L. C. Popovic, S. Collin +13
Results of a long-term spectral monitoring of the active galactic nucleus of NGC 4151 are presented (11 years, from 1996 to 2006). High quality spectra (S/N>50 in the continuum nea…
The size of BLRs of low luminous Active Galactic Nuclei
Zhang Xue-Guang, Deborah Dultzin-Hacyan, Wang Ting-Gui
We study the size of BLRs of low luminosity Active Galactic Nuclei, also called 'dwarf AGN', defined as having ()). We more than double the s…
SDSS J2125-0813: the evidence for the origination of optical FeII emission lines from accretion disk near central black hole
Zhang Xue-Guang, D. Dultzin-Hacyan, Wang Ting-Gui
We report on the radio quiet quasar SDSS J2125-0813 which obviously emits optical FeII emission lines and double-peaked broad Balmer emission lines. Using the accretion disk model…
Accretion onto Supermassive Black Holes in Quasars: Learning from Optical/UV Observations
Paola Marziani, Deborah Dultzin-Hacyan, Jack W. Sulentic
Accretion processes in quasars and active galactic nuclei are still poorly understood, especially as far as the connection between observed spectral properties and physical paramet…
A 3-Dimensional study of the Local Environment of Bright IRAS Galaxies: The AGN/Starburst connection
Elias Koulouridis, Vahram Chavushyan, Manolis Plionis +2
We present a 3-dimensional study of the local ( kpc) and the large scale ( 1 Mpc) environment of Bright IRAS Galaxies (BIRGs). For this purpose we u…
A natural mechanism to induce an electric charge into a black hole
José A. de Diego, Deborah Dultzin-Hacyan, Jesús Galindo Trejo +1
We present a natural mechanism which may induce an electric charge into an accretting black hole in the presence of a strong, high energy radiation field. We study this mechanism u…