activity
19972023
most citedSteps Toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XVI. A Thirteen-Year Study of Spectral Variability in NGC 5548

201 citations · 2k across the 75 of their papers we have counts for

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6 papers · 1 filter

astro-ph.CO2013★ 20 cited

Spectral optical monitoring of a double-peaked emission line AGN Arp 102B: I. Variability of spectral lines and continuum

A. I. Shapovalova, L. C. Popovic, A. N. Burenkov +14

Here we present results of the long-term (1987-2010) optical spectral monitoring of the broad line radio galaxy Arp 102B, a prototype of active galactic nuclei with the double-peak…

astro-ph.CO2012★ 17 cited

Characterization of a sample of intermediate-type AGN. I. Spectroscopic properties and serendipitous discovery of new Dual AGN

Erika Benítez, Jairo Méndez-Abreu, Isaura Fuentes-Carrera +6

A sample of 10 nearby intermediate-type active galactic nuclei (AGN) drawn from the Sloan Digital Sky Survey (SDSS-DR7) is presented. The aim of this work is to provide estimations…

astro-ph.CO2012★ 100 cited

Spectral Optical Monitoring of the Narrow Line Seyfert 1 galaxy Ark 564

A. I. Shapovalova, L. C. Popovic, A. N. Burenkov +14

We present the results of a long-term (1999--2010) spectral optical monitoring campaign of the active galactic nucleus (AGN) Ark 564, which shows a strong Fe II line emission in th…

astro-ph.CO2011★ 21 cited

Optical Spectroscopic ATLAS of the MOJAVE/2cm AGN Sample (1)

Janet Torrealba, Vahram Chavushyan, Irene Cruz-González +3

We present an optical spectroscopic atlas at intermediate resolution (8-15A) for 123 core-dominated radio-loud active galactic nuclei with relativistic jets, drawn from the MOJAVE/…

astro-ph.CO2010★ 1 cited

Multi-band properties of superluminal AGN detected by Fermi/LAT

T. G. Arshakian, J. León-Tavares, J. Torrealba +1

We perform a multi-band statistical analysis of core-dominated superluminal active galactic nuclei (AGN) detected with Fermi Large Area Telescope (LAT). The detection rate of -r…

astro-ph.CO2009

Spectroscopic monitoring of the Blazar 3C 454.3

E. Benitez, V. H. Chavushyan, C. M. Raiteri +5

We performed an optical spectroscopic monitoring of the blazar 3C 454.3 from September 2003 to July 2008. Sixteen optical spectra were obtained during different runs, which constit…