Journal
FRONTIERS IN ASTRONOMY AND SPACE SCIENCES
Volume 4, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fspas.2017.00012
Keywords
galaxies:active-galaxies; quasar:individual (Arp 102B, 3C 390.3, NGC 5548, NGC 4151, NGC 7469, Ark 564, E1821+64.3); quasars: supermassive black holes; quasar:emission lines; line:profiles
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Funding
- RFBR [N97-02-17625 N00-02-16272, N03-02-17123, 06-02-16843, N09-02-01136, 12-02-00857a, 12-02-01237a, N15-02-02101]
- Ministry of Education, Science, Technology and Development, Republic of Serbia [176001]
- INTAS [N96-0328]
- DFG [Ko857/32-2, Ko857/33-1]
- Ministry of Science and Technology of R. Srpska
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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.
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