activity
20052020
most citedSpectral Optical Monitoring of the Narrow Line Seyfert 1 galaxy Ark 564

100 citations · 350 across the 14 of their papers we have counts for

collaborators

14 papers

astro-ph.GA2020★ 14 cited

Baldwin Effect and Additional BLR Component in AGN with Superluminal Jets

V. M. Patiño-Ávarez, J. Torrealba, V. Chavushyan +4

We study the Baldwin Effect (BE) in 96 core-jet blazars with optical and ultraviolet spectroscopic data from a radio-loud AGN sample obtained from the MOJAVE 2 cm survey. A statist…

astro-ph.HE2016★ 58 cited

Optical Spectroscopic Observations of Gamma-ray Blazar Candidates. V. TNG, KPNO, and OAN Observations of Blazar Candidates of Uncertain Type in the Northern Hemisphere

N. Álvarez Crespo, N. Masetti, F. Ricci +12

The extragalactic -ray sky is dominated by emission from blazars, a peculiar class of active galactic nuclei (AGNs). Many of the -ray sources included in Fermi -Large Area Te…

astro-ph.GA2016★ 29 cited

First long-term optical spectro-photometric monitoring of a binary black hole candidate E1821+643: I. Variability of spectral lines and continuum

A. I. Shapovalova, L. C. Popovic, V. H. Chavushyan +9

We report the results of the first long-term (1990-2014) optical spectro-photometric monitoring of a binary black hole candidate QSO E1821+643, a low-redshift high-luminosity radio…

astro-ph.GA2015★ 4 cited

Witnessing the transformation of a quasar host galaxy at z=1.6

A. Humphrey, N. Roche, J. M. Gomes +9

A significant minority of high redshift radio galaxy (HzRG) candidates show extremely red broad band colours and remain undetected in emission lines after optical `discovery' spect…

astro-ph.GA2014★ 42 cited

Spectral optical monitoring of the double peaked emission line AGN Arp 102B: II. Variability of the broad line properties

L. C. Popovic, A. I. Shapovalova, D. Ilic +9

We investigate a long-term (26 years, from 1987 to 2013) variability in the broad spectral line properties of the radio galaxy Arp 102B, an active galaxy with broad double-peaked e…

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…