201 citations · 1.6k across the 36 of their papers we have counts for
35 papers
Long-term optical spectral monitoring of a changing-look AGN NGC 3516 I: Continuum and broad-line flux variability
A. I. Shapovalova, L. C. Popovic, V. L. Afanasiev +11
Here we present the long-term optical spectral monitoring of a changing-look active galactic nuclei (AGN) NGC 3516 that covers 22 years (from 1996 to 2018). We explore a variabilit…
Polarization in the broad lines of NLSy1 and BLSy1 galaxies
L. C. Popovic, V. L. Afanasiev, A. I. Shapovalova
We give an overview of the polarization in the broad lines of Active Galactic Nuclei (AGNs), where we can use the polarization angle for determination of the black hole masses (as…
Long-term monitoring of the broad-line region properties in a selected sample of AGN
Dragana Ilic, Alla I. Shapovalova, Luka C. Popovic +8
We present the results of the long-term optical monitoring campaign of active galactic nuclei (AGN) coordinated by the Special Astrophysical Observatory of the Russian Academy of S…
Oscillatory patterns in the light curves of 5 long-term monitored type 1 AGN
Andjelka B Kovacevic, Ernesto Perez-Hernandez, Luka C. Popovic +3
A new combined data of 5 well known type 1 AGN are probed with a novel hybrid method in a search for oscillatory behavior. Additional analysis of artificial light curves obtained f…
The intrinsic Baldwin effect in broad Balmer lines of six long-term monitored AGNs
Nemanja Rakic, Giovanni La Mura, Dragana Ilic +4
We investigate the intrinsic Baldwin effect (Beff) of the broad H and H emission lines for six Type 1 active galactic nuclei (AGNs) with different broad line characteristics:…
Periodicity in the continua and broad line curves of a quasar E1821+643
Andjelka Kovacevic, Luka C. Popovic, Alla I. Shapovalova +1
Here we present an in-depth analysis of the periodicity of the continua and broad emission lines of a quasar E1821+643. We applied non-parametric composite models, the linear sum o…