Long-Term Monitoring of the Broad-Line Region Properties in a Selected Sample of AGN

Frontiers in Astronomy and Space Sciences

Chavushyan, Vahram¹  Ilić, Dragana²  Popović, Luka Č.²  La Mura, Giovanni³  Burenkov, Alexander N.⁴  Shapovalova, Alla I.⁵  Rakić, Nemanja⁵  Marčeta-Mandić, Sladjana⁶  Kovačević, Andjelka⁷  Kollatschny, Wolfram⁸  Rafanelli, Piero⁹ 

[1] Astronomical Observatory, Belgrade, Serbia;Department of Astronomy, Faculty of Mathematics, University of Belgrade, Belgrade, Serbia;Institut fuer Astrophysik, Universitaet Goettingen, GöInstituto Nacional de AstrofíSpecial Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, Russia;nica, Puebla, Mexico;ptica y Electrósica, Óttingen, Germany

关键词: galaxies:active-galaxies;    quasar:individual (Arp 102B;    3C390.3;    NGC 5548;    NGC 4151;    NGC 7469;    Ark 564;    E1821+643);    Quasars: supermassive black holes;    quasar:emission lines;    line:profiles;   

DOI  :  10.3389/fspas.2017.00012

学科分类：空间科学

来源: Frontiers

【 摘 要 】

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 Science. This campaign has produced a remarkable set of optical spectra, since we have monitored for several decades different types of broad-line (type 1) AGN, from a Seyfert 1, double-peaked line, radio loud and radio quiet AGN, to a supermassive binary black hole candidate. Our analysis of the properties of the broad line region (BLR) of these objects is based on the variability of the broad emission lines. We hereby give a comparative review of the variability properties of the broad emission lines and the BLR of seven different type 1 AGNs, emphasizing some important results, such as the variability rate, the BLR geometry, and the presence of the intrinsic Baldwin effect. We are discussing the difference and similarity in the continuum and emission line variability, focusing on what is the impact of our results to the supermassive black hole mass determination from the BLR properties.

【 授权许可】

CC BY